Asymmetric Michael Additions of α-Nitrocyclohexanone to Aryl Nitroalkenes Catalyzed by Natural Amino Acid-Derived Bifunctional Thioureas
作者:Manuel Jörres、Ingo Schiffers、Iuliana Atodiresei、Carsten Bolm
DOI:10.1021/ol302005f
日期:2012.9.7
A series of new thiourea catalysts prepared from natural amino acids have been applied in organocatalytic asymmetric Michael additions of α-nitrocyclohexanone to nitroalkenes. The resulting addition products are formed with excellent enantioselectivities (up to an er of 98:2) in good yields (up to 90%).
由天然氨基酸制备的一系列新的硫脲催化剂已经用于α-硝基环己酮向硝基烯烃的有机催化不对称迈克尔加成中。形成的加成产物具有良好的对映选择性(高达98:2的er)和良好的产率(高达90%)。