作者:Maria Rogozińska-Szymczak、Jacek Mlynarski
DOI:10.1016/j.tetasy.2014.04.008
日期:2014.5
The asymmetric Michael addition of 4-hydroxycoumarin to α,β-unsaturated ketones on water without organic co-solvents is reported to be catalysed by organic primary amines. The application of enantiomerically pure (S,S)-diphenylethylenediamine affords a series of important pharmaceutically active compounds in good to excellent yields (73–98%) and with good enantioselectivities (up to 76% ee) via reactions
据报道,在没有有机助溶剂的情况下,将4-羟基香豆素不对称迈克尔加成到水上的α,β-不饱和酮上是由有机伯胺催化的。对映体纯(的应用小号,小号)-diphenylethylenediamine得到以良好至优异的产率(73-98%)中并用对映选择性好了一系列重要的药用活性化合物(高达76%ee值经由反应)加速通过超声波。特别地,我们的发展导致的有效协议为华法林抗凝血剂在两种对映体形式的“用水固体”形成。所提出的可扩展性和环境友好的有机催化方法提供的对映纯形式的靶向药物。