Asymmetric Michael reactions of α,α-disubstituted aldehydes with maleimides using a primary amine thiourea organocatalyst
作者:Tsuyoshi Miura、Akira Masuda、Mariko Ina、Kosuke Nakashima、Shohei Nishida、Norihiro Tada、Akichika Itoh
DOI:10.1016/j.tetasy.2011.09.006
日期:2011.9
Primary amine thiourea organocatalyst 8 was used to promote Michael additions of bulky alpha,alpha-disubstituted aldehydes, such as isobutyraldehyde with maleimides to afford the corresponding adducts in high to excellent yields and with up to 91% ee. (C) 2011 Elsevier Ltd. All rights reserved.