<scp>d</scp>-Prolyl-2-(trifluoromethylsulfonamidopropyl)pyrrolidine: An Organocatalyst for Asymmetric Michael Addition of Aldehydes to β-Nitroalkenes at Ambient Conditions
作者:Amol B. Gorde、Ramesh Ramapanicker
DOI:10.1021/acs.joc.8b02945
日期:2019.2.1
yrrolidines and their d-prolinamides were prepared and screened as organocatalysts for the Michael addition reaction of aldehydes with β-nitroalkenes at rt and without the use of additives. d-Prolyl-2-(trifluoromethylsulfonamidopropyl)pyrrolidine was found to be the best among the molecules studied, which yielded γ-nitro aldehydes in very high yields (up to 95%), with high diastereoselectivity (up
制备了四个2-(三氟甲基磺酰胺基烷基)吡咯烷及其d-脯氨酰胺,并筛选出在室温下且不使用添加剂的情况下,醛与β-硝基烯烃的迈克尔加成反应的有机催化剂。发现d -Prolyl-2-(三氟甲基磺酰胺基丙基)吡咯烷是所研究分子中最好的,它以非常高的产率(高达95%),高的非对映选择性(高达> 99:1)和高的非对映选择性产生γ-硝基醛。具有高达97%的ee。