Unexpected regioselective Heck arylation of ethyl (E)-4,4,4-trifluorocrotonate
摘要:
Palladium-catalyzed Heck reactions of ethyl (E)-4,4,4-trifluorocrotonate 1 with aryl bromides 2a-f gave an unexpected cr-arylated compound 4, ethyl (Z)-2-aryl-4,4,4-trifluorocrotonate, mainly rather than normal beta-arylated compound 3, ethyl (Z)-3-aryl-4,4,4-trifluorocrutonate. (C) 2000 Elsevier Science S.A. All rights reserved.
Unexpected regioselective Heck arylation of ethyl (E)-4,4,4-trifluorocrotonate
作者:Yuefa Gong、Katsuya Kato、Hiroshi Kimoto
DOI:10.1016/s0022-1139(00)00305-5
日期:2000.7
Palladium-catalyzed Heck reactions of ethyl (E)-4,4,4-trifluorocrotonate 1 with aryl bromides 2a-f gave an unexpected cr-arylated compound 4, ethyl (Z)-2-aryl-4,4,4-trifluorocrotonate, mainly rather than normal beta-arylated compound 3, ethyl (Z)-3-aryl-4,4,4-trifluorocrutonate. (C) 2000 Elsevier Science S.A. All rights reserved.