Stereoselective synthesis of methyl 3,3-diarylpropenoates
作者:A. P. Rudenko、P. Yu. Savechenkov、A. V. Vasil?ev
DOI:10.1007/s11178-005-0025-1
日期:2004.9
Reactions of Vinyl Type Carbocations Generated in Fluorosulfonic Acid with Benzene Derivatives. New Synthesis of Alkyl 3,3-Diarylpropenoates
作者:P. Yu. Savechenkov、A. P. Rudenko、A. V. Vasil'ev、G. K. Fukin
DOI:10.1007/s11178-005-0340-6
日期:2005.9
Vinyl type carbocations ArC+=CHX [X = CO2H, CO2Alk, C≡N, P(O)(OAlk)2] generated from alkyl 3-arylpropynoates and related compounds in fluorosulfonic acid at −75 to −20°C react with various benzene derivatives, following the mechanism of electrophilic substitution of hydrogen. A new procedure for the synthesis of alkyl 3,3-diarylpropenoates having various substituents in the aryl fragments has been developed on the basis of protonation of the triple bond in alkyl 3-arylpropynoates.