One-step synthesis of ketones from car☐ylic acids and grignard reagents in the presence of a nickel(II)-phosphine catalyst.
作者:V. Fiandanese、G. Marchese、L. Ronzini
DOI:10.1016/s0040-4039(00)88199-x
日期:1983.1
A one-step synthesis of diaryl and alkyl-aryl ketones by the reaction of car☐ylic acid with Grignard reagents in the presence of NiCl2(Ph2PCH2CH2PPh2) as catalyst is described. In the nickel-catalyzedGrignardreaction the formation of alcohols is nearly completely suppressed.
Control of tandem isomerizations: flow-assisted reactions of <i>o</i>-lithiated aryl benzyl ethers
作者:Hyune-Jea Lee、Heejin Kim、Jun-ichi Yoshida、Dong-Pyo Kim
DOI:10.1039/c7cc08460a
日期:——
method for controlling such tandem changes to obtain desired products with high selectivity. Herein, we report a flow microreactor platform for controlling tandem isomerizations of o-lithiated aryl benzylethers based on precise residence time control.
A highly efficient nucleophilic substitution reaction between R<sub>2</sub>P(O)H and triarylmethanols to synthesize phosphorus-substituted triarylmethanes
作者:Long Chen、Xin-Yue Fang、Yun-Xiang Zou
DOI:10.1039/c7ob02970e
日期:——
A highly efficient and general nucleophilic substitutionreaction between dialkyl H-phosphonates or diarylphosphine oxides and triarylmethanols catalyzed by HOTf (trifluoromethanesulfonic acid) has been developed. It provides an atom-economical protocol for the synthesis of various symmetrical and unsymmetrical phosphorus-substituted triarylmethanes that constitute an emerging family of potent anticancer
Allene/haloolefin electrocyclic reactions: a new route to stable triarylmethyl radicals
作者:Ned A. Porter、Derk J. Hogenkamp、Farid F. Khouri
DOI:10.1021/ja00162a050
日期:1990.3
L'electrocyclisation du (bromo-«2» vinyl-2' phenyl-«3» diphenyl-1,1) propadiene, suivit d'une reduction par le mercure, donne le radical (diphenyl β-naphtyl) methyle
L'electrocyclisation du (bromo-«2»vinyl-2' phenyl-«3» diphenyl-1,1) propadiene,suivit d'une 还原 par le mercure,donne le 自由基(二苯基 β-萘基)甲基
Influence of Some Novel N-Substituted Azoles and Pyridines on Rat Hepatic CYP3A Activity
作者:James T. Slama、Julie L. Hancock、Taikyun Rho、Lidia Sambucetti、Kenneth A. Bachmann
DOI:10.1016/s0006-2952(98)00096-3
日期:1998.6
A series of N-substituted heteroaromatic compounds structurally related to clotrimazole was synthesized, and the effects of these compounds on ethosuximide clearance in rats were determined as a measure of their abilities to induce cytochrome P4503A (CYP3A) activity. Ethosuximide clearance and in vitro erythromycin N-demethylase activity were shown to correlate. In this series, imidazole or other related