- Naphthalenediol-based bis(Salamo)-type homo- and heterotrinuclear cobalt(II) complexes: Syntheses, structures and magnetic properties
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Homo- and heterotrinuclear Co(II) complexes with a new acyclic bis(Salamo)-type ligand H4L, which bears a C-shaped O6 site by the metallation of the N2O2 Salamo moieties, were synthesized. The homotrinuclear complex [Co3(L)(OAc)2(CH3OH)2]·2CHCl3 (1) was obtained by the reaction of H4L with 3 equivalents of Co(OAc)2·4H2O. The heterotrinuclear complexes [Co2(L)Ca(OAc)2] (2), [Co2(L)Sr(OAc)2] (3) and [Co2(L)Ba(OAc)2(H2O)]·2CH3CH2OH (4) were acquired by the reaction of H4L with 2 equivalents of Co(OAc)2·4H2O and 1 equivalent of M(OAc)2 (M?=?Ca(II), Sr(II) and Ba(II)). In the crystal structures, the three metal(II) atoms occupy both the N2O2 and O6 sites of the ligand (L)4? moiety. Owing to the different nature of the N2O2 and O6 sites of the ligand H4L, the introduction of two different metal(II) atoms to the site-selective moiety, when compared with complex 1, leads to the replacement of the central Co(II) atom by different alkaline earth metal(II) atoms, namely the Ca(II), Sr(II) and Ba(II) atoms for complexes 2, 3 and 4, respectively. Magnetic measurements were performed on complexes 1–4, where an intramolecular ferromagnetic interaction was found in complex 3 and intramolecular antiferromagnetic interactions were found in complexes 1, 2 and 4. The magnetic susceptibilities above 50?K obey the Curie–Weiss law and their constant values were determined for all the complexes.
- Zhang, Han,Dong, Wen-Kui,Zhang, Yang,Folaranmi Akogun, Sunday
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- A Concise Synthesis of 2-Amino-1,2,3,4-tetrahydronaphthalene-6,7-diol ('6,7-ADTN') from Naphthalene-2,3-diol
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2-Amino-1,2,3,4-tetrahydronaphthalene-6,7-diol (2; 6,7-ADTN) was synthesized starting from naphthalene-2,3-diol in seven steps and with an overall yield of 44%. Methylation of naphthalene-2,3-diol with dimethyl sulfate, followed by Friedel-Crafts acylatio
- Goeksu, Sueleyman,Kazaz, Cavit,Suetbeyaz, Yasar,Secen, Hasan
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- Syntheses, structures and catecholase activities of homo- and hetero-trinuclear cobalt(II) complexes constructed from an acyclic naphthalenediol-based bis(Salamo)-type ligand
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A series of homo- and hetero-trinuclear cobalt(II) complexes [Co3(L)(OAc)2(CH3CH2OH)(H2O)] (1), [Co2Ba(L)(OAc)2] (2) and [Co2Ca(L)(OAc)2]·CHCl3 (
- Li, Li-Hong,Dong, Wen-Kui,Zhang, Yang,Akogun, Sunday Folaranmi,Xu, Li
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- Oxonium and quinonoid intermediates in the sulfonation of dimethoxynaphthalenes (DMONs)
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Monoprotonated oxonium cations (such as 2) and quinonoid dications (such as 5) of 2,3-, 2,6- and 2,7-dimethoxynaphthalenes are described. Their role as direct substrates in sulfonation reactions is discussed together with details of the sulfonation mechanism for 2,3-dimethoxynaphthalene (2,3-DMON), which is presented as a characteristic example. Steady sulfonation rate constants of 2,6- and 2,7-DMON in 80-88% H2SO4 are a result of the DMON protonation equilibria. Binding energies and heats of formation were calculated for several mono- and disulfonic acids of DMONs. Substituent effects are discussed.
- Cisak, Andrzej,Kusztal, Dorota,Brzezinska, Elzbieta
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- Synthetic studies on (1S)-1-(6,7-dimethoxy-2-naphthyl)-1-(1H-imidazol-4-yl) -2-methylpropan-1-ol as a selective C17,20-lyase inhibitor
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An asymmetric synthesis of the selective C17,20-lyase inhibitor 2 has been established in eight steps from 2,3-dihydroxynaphthalene 9. The key steps are the enantioselective oxidation of ketone 17 to the chiral α-hydroxy ketone 18 and the diastereoselective Grignard reaction of 18 to the (2R,3S)-diol 21. In addition, a simple procedure for the preparation of imidazolyl 1,4-dimagnesium bromide has been established; the Grignard reaction of 11 using this reagent in the presence of cinchonine provided 2 with 44% ee.
- Matsunaga, Nobuyuki,Kaku, Tomohiro,Ojida, Akio,Tasaka, Akihiro
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- Synthesis and complexation properties of "zorbarene": A new naphthalene ring-based molecular receptor
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(Chemical Equation Presented) The syntheses of the first 2,3-dialkoxy-substituted naphthalene ring-based macrocycles which have calixarene-like structures are reported. The complexation properties of these octahomotetraoxaisocalix-[4]naphthalenes were investigated. These new members of the calixnaphthalene family did not demonstrate any appreciable complexation with C60 or C70 under the conditions studied, but did so with the tetramethylammonium cation, showing relatively strong association constants suggesting among other considerations that stronger cation-π interactions versus π-π interactions are operative with these hosts. An X-ray crystal structure of the octa-O-ethoxy derivative revealed a structure having a "flattened partial-cone" conformation in which two acetonitrile guest molecules are trapped.
- Tran, Anh Huu,Miller, David O.,Georghiou, Paris E.
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- Self-assembly properties of Salamo-type trinuclear Cu(II) and Co(II) complexes based on the regulation of H+/OHˉ
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A novel naphthalenediol-based bis(salamo)-type tetraoxime compound (H4L) was designed and synthesized. Two new supramolecular complexes, [Cu3(L)(μ-OAc)2] and [Co3(L)(μ-OAc)2(MeOH)2]·4CHCl3 were synthesized by the reaction of H4L with Cu(II) acetate dihydrate and Co(II) acetate dihydrate, respectively, and were characterized by elemental analyses and X-ray crystallography. In the Cu(II) complex, Cu1 and Cu2 atoms located in the N2O2 sites, and are both penta-coordinated, and Cu3 atom is also penta-coordinated by five oxygen atoms. All the three Cu(II) atoms have geometries of slightly distorted tetragonal pyramid. In the Co(II) complex, Co1 and Co3 atoms located in the N2O2 sites, and are both penta-coordinated with geometries of slightly distorted triangular bipyramid and distorted tetragonal pyramid, respectively, while Co2 atom is hexa-coordinated by six oxygen atoms with a geometry of slightly distorted octahedron. These self-assembling complexes form different dimensional supramolecular structures through inter- and intra-molecular hydrogen bonds. The coordination bond cleavages of the two complexes have occurred upon the addition of the H+, and have reformed again via the neutralization effect of the OH?. The changes of the two complexes response to the H+/OH? have observed in the UV–Vis and 1H NMR spectra.
- Dong, Xiu-Yan,Wang, Bao-Jun,Kang, Quan-Peng,Dong, Wen-Kui
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- Sequential and cascade palladium catalysed cyclisation-anion capture- olefin metathesis
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The sequential or cascade combination of palladium catalysed cascade cyclisationanion capture involving two- and three-component processes with olefin metathesis, provides access to fused and spirocyclic ring systems in good yield and a bridged ring forming sequence is reported.
- Evans, Paul,Grigg, Ronald,Ramzan, M. Imran,Sridharan, Visuvanathar,York, Mark
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- 2,3-Dimethoxynaphthalene: solid-state structure as studied via X-ray crystallography and solid-phase 13C nuclear magnetic resonance spectroscopy
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The X-ray crystal structure of the title material has been obtained.A symmetrical structure with the OCH3 groups essentially planar to the aromatic ring has been found.Chemical shift differences observed in the solid-state 13C cross polarization/magic angle spinning spectrum are attributed to intermolecular crystal packing effects, resulting in an asymmetric unit of one molecule.
- Buchanan, G. W.,Gerzain, M.,Bensimon, C.
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- Catalytic Enantioselective Synthesis of Axially Chiral Diarylmethylidene Indanones
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We describe the first atropselective Suzuki-Miyaura cross-coupling of β-keto enol triflates to access axially chiral (Z)-diarylmethylidene indanones (DAIs). The chemical, physical, and biological properties of DAIs are unknown, despite their being structurally similar to arylidene indanones, primarily due to the lack of racemic or chiral methods. Through this work, we demonstrate a general and efficient protocol for the racemic as well as the atropselective synthesis of (Z)-DAIs. An unusual intramolecular Morita-Baylis-Hillman reaction is utilized for the Z-selective synthesis of β-keto enol triflates.
- Kumar, Prashant,Shirke, Rajendra P.,Yadav, Sonu,Ramasastry
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supporting information
p. 4909 - 4914
(2021/06/30)
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- In silico design and synthesis of N-arylalkanyl 2-naphthamides as a new class of non-purine xanthine oxidase inhibitors
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A series of N-arylalkanyl 2-naphthamides (Xa~e), which were predicted from virtual molecular docking on a built xanthine oxidase template as potential inhibitors, were synthesized. Their inhibitory activity against xanthine oxidase was assayed. Among these prepared, compounds Xb (IC50 13.6?μM), Xc (IC50 13.1?μM), and Xd (IC50 12.5?μM) showed comparable inhibitory activity to allopurinol (IC50 22.1?μM). The in vitro assay result correlated well with molecular docking scores, ΔG?=??16.99, ?17.66, and ?17.13 Kcal/mol, respectively. On the potassium oxonate-induced hyperuricemic mice model, oral administration of Xc-Ac (40 mg/ Kg), the per-O-acetylated Xc, could reduce the blood uric acid level by 60% in comparison to the normal control group and is statistically significant (p .01) while compared with the hyperuricemic mice group.
- Ho, Sheau Ling,Lin, Ching-Ting,Lee, Shoei-Sheng
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p. 789 - 801
(2021/01/12)
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- ELECTROACTIVE COMPOUNDS
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There is provided a compound having Formula (I). In Formula (I): Ar1 is a hydrocarbon aryl group, a heteroaryl group, or a substituted derivative thereof; and Ar2 has Formula (IA), (IB), (IC), (IAa), (IBb), or (ICc). The variables are described in detail herein.
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Page/Page column 46; 47
(2020/12/01)
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- ANTICANCER COMPOUND PROCESS
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The present invention relates to a process for preparing compound 1 that useful as an anticancer agent. In particular, the invention seeks to provide new methodology for preparing compound 1 and substituted derivatives thereof.
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Page/Page column 28; 29
(2019/06/23)
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- A conjugated system of curcumin analogs increase and its preparation method and application
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The invention discloses a curcumin analogue with an enlarged conjugated system and a preparation method and application thereof. The structural feature of the curcumin analogue is shown in the general formula (I), wherein R1 is hydrogen and methoxyl, R2 is hydrogen, hydroxy and methoxyl, and two naphthalene nucleuses are connected through a 1,6-heptadiene-3,5-diketone joining chain. The naphthol is used as a raw material, the naphthalene nucleus curcumin analogue with the superior activity for hepatoma carcinoma cell HepG2 cell proliferation is synthesized, and the activity of the curcumin analogue is superior to that of natural curcumin. The curcumin analogue with the enlarged conjugated system has the great significance in guiding discovery of prodrugs and designing lead compounds.
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Paragraph 0064; 0065; 0066
(2017/08/25)
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- ALKYLATION OF PHENOLIC COMPOUNDS
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The invention relates to a process for O-alkyiation of a phenolic compound comprising at least two hydroxyl groups bonded to an aromatic hydrocarbon, the process comprising reacting the phenolic compound with an alkylating agent in the presence of a base, at a suitable reaction temperature and for a suitable time period, thereby alkylating the at least two hydroxy] groups. The invention also relates to O-alkylaled phenolic compounds produced by this process.
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Page/Page column 37
(2015/04/28)
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- Lewis acid/Broensted acid mediated benz-annulation of thiophenes and electron-rich arenes
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A facile preparation of benz-annulated heterocycles were achieved at rt involving a Lewis acid/Broensted acid mediated annulation of heterocycles using 2,5-dimethoxytetrahydrofuran as a four-carbon synthon. The benz-/naphth-annulation was found to be successful with electron-rich arenes as well.
- Rafiq, Settu Muhamad,Sivasakthikumaran, Ramakrishnan,Mohanakrishnan, Arasambattu K.
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supporting information
p. 2720 - 2723
(2014/06/09)
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- METALLOENZYME INHIBITOR COMPOUNDS
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The instant invention describes compounds having metalloenzyme modulating activity, and methods of treating diseases, disorders or symptoms thereof mediated by such metalloenzymes.
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Page/Page column 74
(2013/03/28)
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- Efficient anodic and direct phenol-arene C,C cross-coupling: The benign role of water or methanol
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C,C cross-coupling reactions for the synthesis of nonsymmetrical biaryls represent one of the most significant transformations in contemporary organic chemistry. A variety of useful synthetic methods have been developed in recent decades, since nonsymmetrical biaryls play an evident role in natural product synthesis, as ligand systems in homogeneous catalysis and materials science. Transformation of simple arenes by direct C,H activation belongs to the cutting-edge strategies for creating biaryls; in particular the 2-fold C,H activation is of significant interest. However, in most examples very costly noble metal catalysts, ligand systems, and significant amount of waste-producing oxidants are required. Electrochemical procedures are considered as inherently "green" methods, because only electrons are required and therefore, no reagent waste is produced. Here, we report a metal-free electrochemical method for cross-coupling between phenols and arenes using boron-doped diamond (BDD) anodes in fluorinated media. Our sustainable approach requires no leaving functionalities. Employing water or methanol as mediator represents the key improvement for achieving nonsymmetrical biaryls with superb selectivity and synthetic attractive yields.
- Kirste, Axel,Elsler, Bernd,Schnakenburg, Gregor,Waldvogel, Siegfried R.
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supporting information; experimental part
p. 3571 - 3576
(2012/04/10)
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- Copper-catalyzed asymmetric ring-opening reaction of oxabenzonorbornadienes with Grignard and aluminum reagents
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A highly enantioselective method for the copper-catalyzed desymmetrization of oxabenzonorbornadienes with aluminum reagents and SimplePhos as chiral ligand has been developed. The same reaction with Grignard reagents is also reported. A wide range of alky
- Millet, Renauds,Gremaud, Ludovic,Bernardez, Tania,Palais, Laetitia,Alexakis, Alexandre
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experimental part
p. 2101 - 2112
(2009/12/31)
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- Synthesis of "calixarene-like" N,N-ditosyldiaza[3.3](1,4) naphthalenophanes
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A series of new tetrahomodiazacalix[2]naphthalenes, containing 2,3-dialkoxy-substituted naphthalene units, have been synthesized and some of their properties are reported. All of the newly-synthesized macrocycles were highly symmetrical and conformational
- Tran, Huu-Anh,Collins, Julie,Georghiou, Paris E.
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scheme or table
p. 1175 - 1182
(2009/02/02)
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- Structure variation and luminescence properties of lanthanide complexes incorporating a naphthalene-derived chromophore featuring salicylamide pendant arms
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A new potentially bridging ligand containing two salicylamide pendant arms separated by a 2,3-dimethoxynaphthalene spacer has been prepared and its coordination chemistry with LnIII ions has been investigated. An analysis of the presented crystal structures indicates that the diversity of these supramolecular structures is mainly dictated by the nature of the metal ions. These compounds represent good examples of tuning crystal structures arising from the flexibility of the ligands and the Ln contraction effect. Luminescence studies showed that the introduction of the methoxyl substituents on the naphthalene backbone lowers the triplet energy and considerably changes the luminescent behaviors of the EuIII and TbIII complexes, which is very different from the literature data on similar compounds. In the emission spectra of the Tb complex the ligand fluorescence remains relatively important because of the back-energy transfer from the TbIII ion to the ligand, which to the best of our knowledge, may be the first example of salicylamide lanthanide complexes. Wiley-VCH Verlag GmbH & Co. KGaA, 2008.
- Song, Xue-Qin,Liu, Wei-Sheng,Dou, Wei,Wang, Ya-Wen,Zheng, Jiang-Rong,Zang, Zhi-Peng
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scheme or table
p. 1901 - 1912
(2009/03/11)
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- Gold-catalyzed [4+3]-annulation of oxabicyclic benzenes with 2-substituted allylsilanes through tandem allylation and cyclization
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This work reports new gold-catalyzed [4 + 3]-annulations of oxacyclic benzenes with 2-substituted allylsilanes through tandem allylation and cyclization; on the basis of experimental observations, we propose a mechanism involving the opening of the oxacyclic ring by a PPh3Au +assisted SN2-attack of allylsilanes.
- Hsu, Yu-Chia,Datta, Swarup,Ting, Chun-Ming,Liu, Rai-Shung
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p. 521 - 524
(2008/09/19)
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- Syntheses of substituted naphthalenes and naphthols
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Syntheses of substituted naphthalenes and naphthols are described. Based on Claisen rearrangement, ring-closing metathesis (RCM), and related reactions, isovanillin was successfully transformed into a series of substituted naphthalenes and naphthols with
- Huang, Keng-Shiang,Wang, Eng-Chi,Chen, Hsing-Ming
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p. 585 - 605
(2007/10/03)
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- Derivatives of naphthalene with comt inhibiting activity
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Compounds of formula (I′), wherein A, R1 to R3 and t are as defined in the disclosure, exhibit COMT enzyme inhibiting activity so that they are useful as COMT inhibitors.
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- NAPTHTHALENE DERIVATIVES WHICH INHIBIT THE CYTOKINE OR BIOLOGICAL ACTIVITY OF MACROPHAGE MIGRATION INHIBITORY FACTOR (MIF)
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Where Y, R1-R8 and R101-R108 are as defined in the specification. Compounds of formula (II) and methods of inhibiting the cytokine or biological activity of Macrophage Migrating Inhibitory Factor (MIF) comprising contacting MIF with a compound of formula (I) are provided. The invention also relates to methods of treating diseases or conditions where MIF cytokine or biological activity is implicated comprising administration of compounds of formula (I), either alone or as part of a combination therapy.
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- A novel synthesis of substituted naphthalenes via Claisen rearrangement and RCM reaction
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A novel synthesis of substituted naphthalenes was studied. Starting from isovanillin, basing on Claisen rearrangement and ring-closing metathesis (RCM), a series of 1-alkoxy-2-methoxynaphthalenes and 1-alkoxy-2-methoxy-8-methylnaphthalenes together with a
- Huang, Keng-Shiang,Wang, Eng-Chi
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p. 6155 - 6157
(2007/10/03)
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- Photooxygenation of tetramethoxybenzobarrelene: Synthesis and thermal decomposition of bisdioxetane and endoperoxide
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Photooxygenation of tetramethoxybenzobarrelene (2) afforded endoperoxide 4, and the diastereomeric bisdioxetans syn,syn- and syn,anti-5 in good yields. Thermolysis of the bisdioxetane syn,syn-5 and separately of syn,anti-5 resulted in the monodioxetane trans-6 as major product, whose structure was rigorously established by X-ray analysis. On heating, the monodioxetanes trans- and cis-6 gave tetraester 7 nearly quantitatively. The homo Diels-Alder adduct 4 decomposed at room temperature to the keto ester 9 as the only isolable product. Partial photooxygenation of benzobarrelene 2 gave only the monodioxetane syn-3, no anti-3 was observed. Monodioxetane syn-3 decomposed at room temperature to the dihydronaphthalene 8, the naphthalene derivative 10 and dimethyl oxalate. Photooxygenation of dihydronaphthalene 8 gave quantitatively the dioxetane trans-6. The activation parameters (ΔH(paragraph), ΔS(paragraph) and ΔG(paragraph)) and excitation yields (Φ(S) and Φ(T)) for the bisdioxetane 5 were determined by standard chemiluminescence techniques. It is concluded that the two dioxetane rings in the bisdioxetane 5 cleave thermally successively with no evidence for thermally induced intramolecular sensitization to produce upper excited state products. The mechanism of the thermal decomposition of the bisdioxetane 5 and endoperoxide 4 is discussed.
- Adam, Waldemar,Balci, Metin,Cakmak, Osman,Peters, Karl,Saha-Moeller, Chantu R.,Schulz, Manfred
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p. 9009 - 9024
(2007/10/02)
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- Quantitative structure-activity relationship of catechol derivatives inhibiting 5-lipoxygenase
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Various catechol derivatives (β-substituted 3,4-dihydroxystyrenes, 1-substituted 3,4-dihydroxybenzenes, and 6-substituted 2,3-dihydroxynaphthalenes) were synthesized and their inhibition of 5-lipoxygenase was assayed. Their structure-activity relationships were examined quantitatively with substituent and structural parameters and regression analysis. The variations in the inhibitory activity were explained in bilinear hydrophobic parameter (log P) terms, and steric (molecular thickness) and electronic (proton nuclear magnetic resonance (1H-NMR) chemical shift of the proton adjacent to the catechol group) parameter terms. The hydrophobicity of the inhibitor molecule was important, and the optimum value of log P was about 4.3-4.6, beyond which inhibition did not increase further. A low electron density of the aromatic ring containing the catechol group and the greater thickness of the lipophilic side chains were unfavorable to the activity. The results added a physicochemical basis for the selection of candidate compounds for developmental studies.
- Naito,Sugiura,Yamaura,Fukaya,Yokoyama,Nakagawa,Ikeda,Senda,Fujita
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p. 1736 - 1745
(2007/10/02)
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- Manganese(III)-Mediated Formylation of Aromatic Compounds in the Presence of Malonic Acid
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The reaction of naphthlenes with malonic acid in the presence of manganese(III) acetate gives naphthalenecarbaldehydes and naphthalenecarboxylic acids.Similar reactions of anthracene, pyrene, and methoxybenzenes also yield formylated and carboxylated products.It was found that the formyl group introduced to the aromatic ring was not derived from carboxymethyl radical generated directly by the thermolysis of manganese(III) acetate, but from a dicarboxymethyl radical formed by the interaction of malonic acid and manganese(III) acetate.In addition, it was also found that the dicarboxymethyl radicals attacked the position of the highest electron density on the aromatic ring and that this formylation was effective when the ionization potential of the aromatic copound was lower than 7.8 eV.
- Nishino, Hiroshi,Tsunoda, Katsunori,Kurosawa, Kazu
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p. 545 - 550
(2007/10/02)
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- A NEW APPROACH TO THE SYNTHESIS OF ARYLDIFLUOROPHOSHINES. FORMATION OF CIS-DICHLORO-BIS(ARYLDIFLUOROPHOSPHINE)PLATINUM(II) COMPLEXES
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Reaction of chlorodifluorophosphine with aryllithium compounds has been found to furnish aryldifluorophosphines.This type of reaction is applicable to any aromatic system for which a regioselective lithiation is possible.The most stable products are those
- Heuer, Lutz,Schmutzler, Reinhard
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p. 197 - 216
(2007/10/02)
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- LANTHANIDE-INDUCED SHIFTS OF STERICALLY HINDERED AROMATIC o-DIMETHOXY COMPOUNDS: MODEL COMPOUNDS AND o-DIMETHOXYCOUMARINS
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The lanthanide-induced shifts (LIS) of a series of sterically hindered o-dimethoxy compounds, characterized by a 3-substituted 1,2-dimethoxy unit as a structural element, were simulated in model calculations.Development of a generally suitable computational model for aromatic o-dimethoxycompounds allows prediction of relative LIS values for o-dimethoxy complexation.The model was used for several naturally occurring dimethoxycoumarins taking into account the population ratios of the two possible co-ordinating sites in these molecules (o-dimethoxy and lactone carbonyl).
- Hofer, Otmar
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p. 715 - 720
(2007/10/02)
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- Vilsmeier-Haack Reaction on Methoxyallylbenzenes
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Vilsmeier-Haack reaction on various methoxyallylbenzenes yields the naphthaldehydes (2, 11, 14, 17, 20, 21) when ortho-position to the allyl group is activated.In other cases only nuclear formylated products are obtained.The product analysis suggests that nuclear formylation is probably the first step in these reactions.
- Narasimhan, N. S.,Mukhopadhyay, T.,Kusurkar, S. S.
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p. 546 - 548
(2007/10/02)
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- Photochemical reactions of charge-transfer complexes. The irradiation of the charge-transfer complexes between 1,4-, 1,5-, and 2,3-dimethoxynaphthalenes and 1,2-dicyanoethylenes.
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The first part of this paper describes the experimental search for a donor which would complex preferentially one of the isomers of 1,2-dicyanoethylene.This involved measuring the association constants (KDAc) of the charge-transfer (ct) complexes of several dimethoxynaphthalenes (DMN) with maleonitrile (MN) and fumaronitrile (FN).From the measured KDAc, we found that MN complexes more strongly than FN with 1,4- and 1,5-DMN but that FN complexes more strongly with 2,3-DMN than does MN.These results are explained in terms of more than one favourable geometry for the ct complexes, since the donors are relatively large compared to the acceptors.Irradiation of the ct complexes between 1,4-, 1,5-, or 2,3-DMN and 1,2-dicyanoethylene led to isomerization of the olefins.The photostationary state depends on the absorption spectra of the ct complexes formed between the donor and the isomeric olefins.From spectroscopic and photo-CIDNP studies, we find evidence that the isomerization in polar solvents takes place via the triplet state of the olefin.The triplet is formed from the radical ion pair resulting after excitation of the ct complex.
- Wong, P.C.,Arnold, D.R.
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p. 918 - 927
(2007/10/02)
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