Catalytic Desymmetrization of Cyclohexadienes by Asymmetric Bromolactonization
摘要:
Asymmetric bromolactonization of prochiral cyclohexadiene derivatives with N-bromosuccimide proceeded in the presence of (DHQD)(2)PHAL as a chiral catalyst to afford the corresponding bromolactones with up to 93% ee. This reaction was also applicable to the kinetic resolution of a racemic cyclic ene-carboxylic acid, where the starting material was recovered with high enantioselectivity.
Catalytic Desymmetrization of Cyclohexadienes by Asymmetric Bromolactonization
摘要:
Asymmetric bromolactonization of prochiral cyclohexadiene derivatives with N-bromosuccimide proceeded in the presence of (DHQD)(2)PHAL as a chiral catalyst to afford the corresponding bromolactones with up to 93% ee. This reaction was also applicable to the kinetic resolution of a racemic cyclic ene-carboxylic acid, where the starting material was recovered with high enantioselectivity.
Catalytic Desymmetrization of Cyclohexadienes by Asymmetric Bromolactonization
作者:Kazutada Ikeuchi、Shunsuke Ido、Satoshi Yoshimura、Tomohiro Asakawa、Makoto Inai、Yoshitaka Hamashima、Toshiyuki Kan
DOI:10.1021/ol302908a
日期:2012.12.7
Asymmetric bromolactonization of prochiral cyclohexadiene derivatives with N-bromosuccimide proceeded in the presence of (DHQD)(2)PHAL as a chiral catalyst to afford the corresponding bromolactones with up to 93% ee. This reaction was also applicable to the kinetic resolution of a racemic cyclic ene-carboxylic acid, where the starting material was recovered with high enantioselectivity.