Facile access to chiral 1-pyrrolines through Rh-catalyzed enantioselective partial hydrogenation of unprotected simple pyrroles
作者:Kui Tian、Gongyi Liu、Xiu-Qin Dong
DOI:10.1016/j.cclet.2022.04.027
日期:2022.12
Highly enantioselective Rh-catalyzed partial hydrogenation of unprotected simple 2-alkyl-5-aryl-disubstituted pyrroles has been successfully developed, generating a series of chiral 1-pyrroline derivatives generally with excellent results (95%–99% yields, 91%–96% ee). Moreover, 2,5-aryl-1H-pyrroles were hydrogenated well in high yields and good enantioselectivities. This efficient protocol features
已成功开发出高对映选择性 Rh 催化的未保护的简单 2-烷基-5-芳基二取代吡咯的部分氢化,生成了一系列手性 1-吡咯啉衍生物,通常具有优异的结果(95%–99% 产率,91%–96 % ee )。此外,2,5-aryl-1 H-吡咯被很好地氢化,收率高,对映选择性好。这种高效的协议具有易于获得的底物、广泛的底物范围、良好的官能团兼容性、市售的铑前体和手性配体。它提供了一种获得手性 1-吡咯啉衍生物的通用途径,这些衍生物在有机合成和药物化学中具有重要意义。