Enantioselective Synthesis of β-Amino Esters Bearing a Benzothiazole Moiety via a Mannich-Type Reaction Catalyzed by a Cinchona Alkaloid Derivative
作者:Liang Li、Bao-An Song、Pinaki S. Bhadury、Yu-Ping Zhang、De-Yu Hu、Song Yang
DOI:10.1002/ejoc.201100351
日期:2011.7.18
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。