519-73-3Relevant articles and documents
Supercritical Carbon Dioxide. 3. The Decomposition of Phenylazotriphenylmethane in Supercritical Carbon Dioxide
Sigman, Michael E.,Leffler, John E.
, p. 1165 - 1167 (1987)
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Efficient reduction of triphenylmethanol to triphenylmethane by 9,10-dihydro-10-methylacridine in the presence of perchloric acid
Ishikawa,Fukuzumi,Goto,Tanaka
, p. 3754 - 3756 (1989)
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Imidoyl radicals as synthons of unstable acyl radicals
Fujiwara,Matsuya,Maeda,Shin-Ike,Kambe,Sonoda
, p. 2183 - 2185 (2001)
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Synthesis and characterization of a gold vinylidene complex lacking π-conjugated heteroatoms
Harris, Robert J.,Widenhoefer, Ross A.
, p. 6867 - 6869 (2015)
Abstract Hydride abstraction from the gold (disilyl)ethylacetylide complex [(P)Au{η1-C≡CSi(Me)2CH2CH2SiMe2H}] (P=P(tBu)2o-biphenyl) with triphenylcarbenium tetrakis(pentafluorophenyl)borate at -20 °C formed the cationic gold (β,β-disilyl)vinylidene complex [(P)Au=C=CSi(Me)2CH2CH2Si(Me)2]+B(C6F5)4- with ≥90% selectivity. 29Si NMR analysis of this complex pointed to delocalization of positive charge onto both the β-silyl groups and the (P)Au fragment. The C1 and C2 carbon atoms of the vinylidene complex underwent facile interconversion (ΔG≠=9.7 kcal mol-1), presumably via the gold π-disilacyclohexyne intermediate [(P)Au{η2-C≡CSi(Me)2CH2CH2Si(Me)2}]+B(C6F5)4-. Good as gold: Cationic gold (β,β-disilyl)vinylidene complex 1 was generated by addition of a pendant silylium ion to the C≡C bond of a gold acetylide complex (see scheme, P=PtBu2(o-biphenyl)). The vinylidene C1 and C2 atoms of 1 undergo facile interconversion, presumably via a π-disilacyclohexyne intermediate. 29Si NMR analysis of 1 indicates delocalization of positive charge onto both the β-silyl groups and the (P)Au fragment.
N-Heterocyclic Phosphenium Dihalido-Aurates: On the Borderline between Classical Coordination Compounds and Ion Pairs
Nickolaus, Jan,Schlindwein, Simon H.,Nieger, Martin,Gudat, Dietrich
, p. 1849 - 1854 (2017)
2-Bromo- and 2-chloro-1,3,2-diazaphospholenes react with (tht)AuCl to afford isolable N-heterocyclic phosphenium (NHP) dihalido-aurates, which were characterized by analytical and spectroscopic data and in one case by a single-crystal X-ray diffraction study. The T-shaped metal coordination sphere found in the crystal consists of a pseudo-linear AuX2 unit that is perturbed by a weakly bound NHP unit. DFT studies indicate that the subunits interact mainly through electrostatic and dispersion forces, with negligible covalent contributions, and that the phosphenium dibromido-aurate is slightly more stable than an isomeric complex with an intact bromophosphane ligand. NMR studies reveal that the NHP-AuX2 pairs persist in solution but are kinetically labile and readily undergo halide scrambling. The hydride/fluoride exchange reaction between a secondary phosphane-AuCl complex and [Ph3C][BF4] implies that a gold complex with an intact 2-halogeno-1,3,2-diazaphospholene ligand may be more stable than its phosphenium dihalido-aurate isomer when covalent P–X bonding contributions are strengthened.
Nesmeyanov et al.
, (1974)
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Peytral
, p. 917 (1942)
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Superacid-catalyzed condensation of benzaldehyde with benzene. Study of protonated benzaldehydes and the role of superelectrophilic activation
Olah, George A.,Rasul, Golam,York, Chentao,Prakash, G. K. Surya
, p. 11211 - 11214 (1995)
Under superacid conditions benzaldehyde reacts readily with benzene to give triphenylmethane in high yield. Experimental evidence supports the involvement of diprotonated benzaldehyde in the reaction. Ab initio calculations at the correlated MP2/6-31G* le
Trapping of an NiII Sulfide by a CoI Fulvene Complex
Hartmann, Nathaniel J.,Wu, Guang,Hayton, Trevor W.
, p. 1765 - 1769 (2017)
The reaction of [LtBuNiII(SCPh3)] (LtBu = {(2,6-iPr2C6H3)NC(tBu)}2CH) with Cp*2Co yields a NiI cobaltocenium thiolate complex, [LtBuNiI(SCH2Me4C5)Co(Cp*)] (1), along with HCPh3. Formation of this complex is proposed to occur via the reaction of a transient NiII sulfide, [Cp*2Co][LtBuNiII(S)], with a CoI fulvene complex, [CoCp*(C5Me4CH2)]. The latter complex is formed in situ by reaction of [Cp*2Co]+ with [CPh3]?. Control experiments, as well as cyclic voltammetry measurements of 1, are used to support the proposed mechanism.
Evidence for a Silylenium Ion in Solution
Lambert, Joseph B.,Schulz, William J.
, p. 1671 - 1672 (1983)
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Bent,Cuthbertson
, p. 170,171 (1936)
Substituent effects on the reaction of trityl chlorides with Grignard reagents
Oyler,Ketz,Glass
, p. 8247 - 8250 (2000)
The result of the substitution of trityl chlorides with Grignard reagents was found to be highly dependent on the solvent and the nature of the substituents on the trityl group. In THF, electron donating substituents were found to give high yields of Grig
Bachmann
, p. 239 (1934)
A Mild, General, Metal-Free Method for Desulfurization of Thiols and Disulfides Induced by Visible-Light
Qiu, Wenting,Shi, Shuai,Li, Ruining,Lin, Xianfeng,Rao, Liangming,Sun, Zhankui
supporting information, p. 1255 - 1258 (2021/05/05)
A visible-light-induced metal-free desulfurization method for thiols and disulfides has been explored. This radical desulfurization features mild conditions, robustness, and excellent functionality compatibility. It was successfully applied not only to the desulfurization of small molecules, but also to peptides.
A facile and versatile electro-reductive system for hydrodefunctionalization under ambient conditions
Huang, Binbin,Guo, Lin,Xia, Wujiong
supporting information, p. 2095 - 2103 (2021/03/26)
A general electrochemical system for reductive hydrodefunctionalization is described, employing the inexpensive and easily available triethylamine (Et3N) as a sacrificial reductant. This protocol is characterized by facile operation, sustainable conditions, and exceptionally wide substrate scope covering the cleavage of C-halogen, N-S, N-C, O-S, O-C, C-C and C-N bonds. Notably, the selectivity and capability of reduction can be conveniently switched by simple incorporation or removal of an alcohol as a co-solvent.