Novel β-amino esters bearing a bioactive benzothiazole moiety were obtained with high enantioselectivities (up to 95 % ee) through a Mannich-type reaction of different imines with malonate in the presence of a new chiral cinchona alkaloid thiourea catalyst. Imines derived from both aromatic and heterocyclic aldehydes were found useful in this conversion.
在新型手性
金鸡纳
生物碱硫脲催化剂存在下,通过不同
亚胺与
丙二酸酯的曼尼希型反应,以高对映选择性(高达 95% ee)获得了具有
生物活性
苯并噻唑部分的新型 β-
氨基酯。发现衍生自芳香醛和杂环醛的
亚胺可用于这种转化。