Asymmetric Michael additions of aldehydes to maleimides using a recyclable fluorous thiourea organocatalyst
作者:Tsuyoshi Miura、Shohei Nishida、Akira Masuda、Norihiro Tada、Akichika Itoh
DOI:10.1016/j.tetlet.2011.05.145
日期:2011.8
Fluorous thiourea organocatalyst 3 promotes the Michael reaction of aldehydes with maleimides to afford the corresponding adducts in high yields with up to 99% ee. Fluorous organocatalyst 3 can be easily recovered as an insoluble precipitate from the reaction mixture by simple filtration and can be reused without significant loss of catalytic activity.
氟代硫脲有机催化剂3促进醛与马来酰亚胺的迈克尔反应,以高收率提供相应的加合物,ee最高可达99%。氟有机催化剂3可以通过简单的过滤容易地从反应混合物中以不溶性沉淀物的形式回收,并且可以在不显着损失催化活性的情况下重复使用。