作者:Bas Ritzen、Matthijs C. M. van Oers、Floris L. van Delft、Floris P. J. T. Rutjes
DOI:10.1021/jo901548t
日期:2009.10.2
straightforward, five-step procedure for the synthesis of enantiomerically pure 2,3-disubstituted trans-aziridines has been developed starting from commercially available aldehydes. Hydroxynitrile lyase-mediated cyanohydrin formation provided cyanohydrins in excellent enantioselectivities and good yields. Subsequent formation of diastereomerically pure anti-amino alcohols via a one-pot Grignard addition−reduction
从可商购的醛开始,已经开发出用于合成对映体纯的2,3-二取代的反式氮丙啶的简单的五步程序。羟基腈裂解酶介导的氰醇的形成提供了优异的对映选择性和良好的产率的氰醇。随后通过一锅式格氏加成-还原序列,Cu II催化的重氮转移和三苯基膦介导的还原环化反应形成非对映体纯的抗氨基醇,从而以高收率和优异的非对映选择性提供了相应的反式-氮丙啶。