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Site-Specific Oxidation of (sp3)C-C(sp3)/H Bonds by NaNO2/HCl
A site-specific oxidation of (sp3)C-C(sp3) and (sp3)C-H bonds in aryl alkanes by the use of NaNO2/HCl was explored. The method is chemical-oxidant-free, transition-metal-free, uses water as the solvent, and proceeds under mild conditions, making it valuable and attractive to synthetic organic chemistry.
Zhao, Jianyou,Shen, Tong,Sun, Zhihui,Wang, Nengyong,Yang, Le,Wu, Jintao,You, Huichao,Liu, Zhong-Quan
p. 4057 - 4061
(2021/05/26)

Metal Sulfonate Polymers as Catalysts for the Heterogeneous Acylation of Aromatic Derivatives
A series of metal sulfonate salts attached to a poly(ether ether ketone) (PEEK) polymer were prepared by ultrasonic activation and then examined as heterogeneous catalysts in the Friedel–Crafts acylation of aromatic derivatives.
Morizur, Vincent,Hector, Daphné,Olivero, Sandra,Desmurs, Jean Roger,Du?ach, Elisabet
supporting information
p. 3126 - 3129
(2016/07/12)

SUBSTITUTED CARBAZOLE DERIVATIVES AND USE THEREOF IN ORGANIC ELECTRONICS
An organic light-emitting diode, organic solar cell or switching element comprising at least one substituted carbazole derivative of the general formula (I), (II) or (III) in which X is NR4, O, S or PR4;Y is NR5, O, S or PR5; where at least one of the symbols X and Y is NR4 or NR5; substituted carbazole derivatives of the formula (I), (II) or (III); a light-emitting layer comprising at least one substituted carbazole derivative of the general formula (I), (II) or (III) and at least one emitter material; the use of substituted carbazole derivatives of the general formula (I), (II) or (Ill) as matrix material, hole/exciton blocker material and/or electron/exciton blocker material and/or hole injection material and/or electron injection material and/or hole conductor material and/or electron conductor material in an organic light-emitting diode, an organic solar cell or in a switching element, and a device selected from the group consisting of stationary visual display units, mobile visual display units, illumination units, keyboards, garments, furniture and wallpaper comprising at least one inventive organic light-emitting diode.
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(2011/11/12)

SUBSTITUTED CARBAZOLE DERIVATIVES AND USE THEREOF IN ORGANIC ELECTRONICS
An organic light-emitting diode, organic solar cell or switching element comprising at least one substituted carbazole derivative of the general formula (I), (II) or (III) in which X is NR4, O, S or PR4; Y is NR5, O, S or PR5; where at least one of the symbols X and Y is NR4 or NR5; R1 and R3 are each independently substituted or unsubstituted C1-C20-alkyl, substituted or unsubstituted C6-C30-aryl, substituted or unsubstituted heteroaryl having 5 to 30 ring atoms or a substituent with donor or acceptor action selected from the group consisting of C1-C20-alkoxy, C6-C30-aryloxy, C1-C20-alkylthio, C6-C30-arylthio, SiR6R7R8, halogen radicals, halogenated C1-C20-alkyl radicals, carbonyl (-CO(R6)), carbonylthio (- C = O (SR6)), carbonyloxy (- C = O(OR6)), oxycarbonyl (- OC = O(R6)), thiocarbonyl (- SC = O(R6)), amino (-NR6R7), OH, pseudohalogen radicals, amido (- C = O (NR6)), -NR6C = O (R7), phosphonate (- P(O) (OR6)2), phosphate (-OP(O) (OR6)2), phosphine (-PR6R7), phosphine oxide (-P(0)R62), sulfate (-OS(0)2OR6), sulfoxide (-S(O)R6), sulfonate (-S(O)2OR6), sulfonyl (-S(O)2R6), sulfonamide (-S(O)2NR6R7), N02, boronic esters (-OB(OR6)2), imino (-C = NR6R7), borane radicals, stannane radicals, hydrazine radicals, hydrazone radicals, oxime radicals, nitroso groups, diazo groups, vinyl groups, sulfoximines, alanes, germanes, boroximes and borazines;
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Page/Page column 90-91

(2011/10/31)

Chemoenzymatic synthesis of (R)- and (S)-1-heteroarylethanols
A chemoenzymatic methodology for the synthesis of highly enantiomerically enriched (S)- and (R)-1-heteroarylethanols by enantioselective bioreduction with baker's yeast of the corresponding 1-heteroarylethanones followed by three racemization free chemical steps including a Mitsunobu reaction was developed.
Tosa, Monica Ioana,Podea, Paula Veronica,Paizs, Csaba,Irimie, Florin Dan
p. 2068 - 2071
(2008/12/22)

PYRROLIDINE INHIBITORS OF IAP
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Page/Page column 61

(2008/06/13)

4-(Heteroaryl-methyl and substituted heteroaryl-methyl)-imidazole-2-thiones acting as alpha2 adrenergic agonists
Compounds of Formula 1 where the variables have the meaning defined in the specification are agonists of alpha2 adrenergic receptors. Several compounds of the disclosure are specific or selective to alpha2B and/or alpha2C adrenergic receptors in preference over alpha2A adrenergic receptors. Additionally some of the claimed compounds have no or only minimal cardivascular and/or sedatory activity. The compounds of Formula 1 are useful as medicaments in mammals, including humans, for treatment of diseases and or alleviations of conditions which are responsive to treatment by agonists of alpha2 adrenergic receptors. Compounds of Formula 1 which have no significant cardiovascular and/or sedatory activity are useful for treating pain and other conditions with minimal side effects.
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Page/Page column 23-24

(2010/10/20)

Aryl- and heteroaryl-substituted tetrahydroisoquinolines and use thereof to block reuptake of norepinephrine, dopamine, and serotonin
The compounds of the present invention are represented by the chemical structure found in Formula (I): wherein: the carbon atom designated * is in the R or S configuration; and X is a fused bicyclic carbocycle or heterocycle selected from the group consisting of benzofuranyl, benzo[b]thiophenyl, benzoisothiazolyl, benzoisoxazolyl, indazolyl, indolyl, isoindolyl, indolizinyl, benzoimidazolyl, benzooxazolyl, benzothiazolyl, benzotriazolyl, imidazo[1,2-a]pyridinyl, pyrazolo[1,5-a]pyridinyl, [1,2,4]triazolo[4,3-a]pyridinyl, thieno[2,3-b]pyridinyl, thieno[3,2-b]pyridinyl, 1H-pyrrolo[2,3-b]pyridinyl, indenyl, indanyl, dihydrobenzocycloheptenyl, tetrahydrobenzocycloheptenyl, dihydrobenzothiophenyl, dihydrobenzofuranyl, indolinyl, naphthyl, tetrahydronaphthyl, quinolinyl, isoquinolinyl, 4H-quinolizinyl, 9aH-quinolizinyl, quinazolinyl, cinnolinyl, phthalazinyl, quinoxalinyl, benzo[1,2,3]triazinyl, benzo[1,2,4]triazinyl, 2H-chromenyl, 4H-chromenyl, and a fused bicyclic carbocycle or fused bicyclic heterocycle optionally substituted with substituents (1 to 4 in number) as defined in R14; with R1, R2, R3, R4, R5, R6, R7, R8, and R14 defined herein.
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Page/Page column 96

(2008/06/13)

Enantioselective synthesis of 2- and 3-benzofuryl β-amino alcohols
Enantioselective reduction of 2- and 3-bromoacetylbenzofurans with (-)-B-chlorodiisopinocampheylborane produced the corresponding bromohydrins which were transformed into (S)-(benzofuran-2-yl)oxirane of 70% ee and (S)-(benzofuran-3-yl)oxirane of 71% ee, respectively. The epoxides treated with primary alkylamines gave the corresponding (S)-1-(benzofuran-2- and -3-yl)-2-(alkylamino) ethanols.
Zaidlewicz, Marek,Chechlowska, Aldona,Prewysz-Kwinto, Andrzej,Wojtczak, Andrzej
p. 569 - 577
(2007/10/03)

Condensed thiazole derivatives, having 5-HT receptor affinity
Compounds of formula I STR1 in which A is S(O) p or O;p is 0, 1 or 2;g is 0, 1, 2, 3, or 4;n is 2 or 3; andR 1, R 2, R 3, R 4 and R 5 are optional substituents have utility in the treatment of central nervous system disorders, for example depression, anxiety, psychoses (for example schizophrenia), tardive dyskinesia, obesity, drug addiction, drug abuse, cognitive disorders, Alzheimer''s disease, senile dementia, cerebral ischemia, obsessive-compulsive behavior, panic attacks, social phobias, eating disorders and anorexia, non-insulin dependent diabetes mellitus, hyperglycemia, and stress.
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(2008/06/13)

Vinylindenes and Some Heteroanalogues in the Diels-Alder Reaction. X Dibenzofurans from 3-Vinylbenzofurans
3-Vinylbenzofuran, 3-isopropenylbenzofuran and 2-methyl-3-vinylbenzofuran give normal adducts with ethenetetracarbonitrile, accompanied, in the case of the last named diene, by the isomeric cyclobutane.Normal adducts also result from these dienes and 4-phenyl-1,2,4-triazoline-3,5-dione, and from 3-vinylbenzofuran and both maleic anhydride and N-phenylmaleimide. 3-Vinylbenzofuran gives the rearranged adduct dimethyl 1,2-dihydrodibenzofuran-3,4-dicarboxylate with dimethyl acetylenedicarboxylate.
Pearson, James R.,Porter, Quentin N.
p. 1085 - 1095
(2007/10/02)

CONFORMATIONAL ANALYSIS OF ORGANIC CARBONYL COMPOUNDS. PART 4. A (1)H AND (13)C NUCLEAR MAGNETIC RESONANCE STUDY OF FORMYL AND ACETYL DERIVATIVES OF BENZOFURAN
A conformational study of formyl and acetyl derivatives of benzofuran provides evidence that in the case of 2- and 7-derivatives the E,Z-conformational mixture is solvent dependent, the Z-form prevailing in solvents with higher polarity.The presence of the same substituents in the 3- and 4-position gives compounds with predominantly Z-conformation and no change is caused by solvents.These results show an interestingly different behaviour by carbonyl derivatives of benzofuran with respect to the same benzothiophene derivatives.The conformational analysis was carried out by the n.m.r. method by employing (1)H and (13)C chemical shifts, long-range proton-proton coupling constants, and lanthanide-induced shifts (LIS) simulation.For the derivatives substituted in position 7, the LIS method is not a suitable approach for the determination of the conformer populations since, in solution, a chelate is formed where bonding of Eu to the oxygen atoms of the carbonyl and of the heterocyclic ring stabilizes the Z-form.A quantitative approach for determining the relative conformer populations of benzofuran-7-carbaldehyde was set up by statistical manipulation of long-range proton-proton coupling constants, proton chemical shifts, and the classical of dielectrics.
Benassi, Rois,Folli, Ugo,Iarossi, Dario,Schenetti, Luisa,Taddei, Ferdinando
p. 1479 - 1486
(2007/10/02)

Furano Compounds: Part IL - Solvolytic Rearrangement of Ketoximes in Benzofuran Series and PMR Study of Benzofuryl-2-alkyl(aryl) Ketoximes
Solvolytic rearrangement of tosylates of 3-alkyl(aryl)-benzofuryl-2-alkyl ketoximes and 2-substituted(and unsubstituted)benzofuryl-3-methyl ketoximes with aqueous methanol depends upon their configurations.The tosylates of 2-ethyl(benzyl)benzofuryl-3-methyl ketoximes obtained in alkaline medium do not undergo solvolytic rearrangement under similar conditions.The isomerisation of anti-isomers of the above mentioned ketoximes to syn-forms with hydrogen chloride is unsuccesful.The configurations of syn- and anti-isomers of benzofuryl-2-alkyl(aryl) ketoximes have been studied by PMR spectroscopy.
Chatterjea, J. N.,Singh, K. R. R. P.
p. 1053 - 1056
(2007/10/02)