Ru-catalyzed highly chemo- and enantioselective hydrogenation of γ-halo-γ,δ-unsaturated-β-keto esters under neutral conditions
作者:Xin Ma、Wanfang Li、Xiaoming Li、Xiaoming Tao、Weizheng Fan、Xiaomin Xie、Tahar Ayad、Virginie Ratovelomanana-Vidal、Zhaoguo Zhang
DOI:10.1039/c2cc30925d
日期:——
Finely-tuned ruthenium-catalyzed highly chemoselective and enantioselective hydrogenation of gamma-halo-gamma,delta-unsaturated-beta-keto esters at the carbonyl group was achieved under neutral reaction conditions (ee up to 97%). Both olefin and alkenyl halogen moieties, which are labile under hydrogenation conditions, remained untouched during the reaction.
在中性反应条件下(ee高达97%),实现了钌的精细调节,催化了羰基上的gamma-卤代-gamma,δ-不饱和β-酮酸酯的高度化学选择性和对映选择性氢化。在氢化条件下不稳定的烯烃和烯基卤素部分都在反应过程中保持不变。