Enantioselective synthesis of allenecarboxylates from phenyl acetates through CC bond forming reactions
摘要:
A variety of optically active 4,4-disubstituted allenecarboxylic acid methyl esters were prepared from simple alpha,alpha -disubstituted phenyl acetate through base treatment of the esters to generate ketenes, followed by successive Horner-Wadsworth-Emmons reaction. The transformation was further developed as a one-pot procedure with satisfactory yields and high enantioselectivity. (C) 2001 EIsevier Science Ltd. All rights reserved.
Enantioselective synthesis of allenecarboxylates from phenyl acetates through CC bond forming reactions
摘要:
A variety of optically active 4,4-disubstituted allenecarboxylic acid methyl esters were prepared from simple alpha,alpha -disubstituted phenyl acetate through base treatment of the esters to generate ketenes, followed by successive Horner-Wadsworth-Emmons reaction. The transformation was further developed as a one-pot procedure with satisfactory yields and high enantioselectivity. (C) 2001 EIsevier Science Ltd. All rights reserved.
A variety of optically active 4,4-disubstituted allenecarboxylic acid methyl esters were prepared from simple alpha,alpha -disubstituted phenyl acetate through base treatment of the esters to generate ketenes, followed by successive Horner-Wadsworth-Emmons reaction. The transformation was further developed as a one-pot procedure with satisfactory yields and high enantioselectivity. (C) 2001 EIsevier Science Ltd. All rights reserved.