Organocatalytic Enantioselective Strecker Reaction of Imines Containing a Thiazole Moiety by Using a Cinchona-Based Squaramide Catalyst
作者:Hai-Xiao He、Da-Ming Du
DOI:10.1002/ejoc.201402764
日期:2014.10
organocatalytic enantioselective Strecker reaction was developed for the synthesis of α-amino nitriles that contain a thiazole moiety by using a cinchona-based squaramide catalyst. The corresponding products were obtained in good to excellent yields (up to 99 %) with excellent enantioselectivities (up to 98 % ee) by starting from aromatic-substituted imines. In addition, two trifunctional squaramides
开发了一种有机催化对映选择性 Strecker 反应,用于通过使用基于金鸡纳的方酸酰胺催化剂合成含有噻唑部分的 α-氨基腈。通过从芳族取代的亚胺开始,以良好到极好的产率(高达 99%)和极好的对映选择性(高达 98% ee)获得了相应的产品。此外,合成了两种具有氨基酸残基的三官能方酸酰胺,当它们用于模型反应时,实现了良好的对映选择性(高达 89% ee)。