Catalytic asymmetric 1,2-Addition/Lactonization tandem reactions for the syntheses of chiral 3-Substituted phthalides using organozinc reagents
作者:Huayin Huang、Yabai Wang、Hua Zong、Ling Song
DOI:10.1002/aoc.4643
日期:2019.1
Using chiral phosphoramide ligand 2d‐Zn (II) complex derived from (1R,2R)‐1,2‐diphenylethylenediamine as the catalyst, we have developed efficient catalytic asymmetric 1,2‐addition/lactonization tandem reactions of diverse organozinc reagents with varied methyl 2‐formylbenzoates for the construction of optically enriched 3‐aryl or alkyl substituted phthalides, which are significant building blocks
使用衍生自(1 R,2 R)-1,2-二苯基乙二胺的手性磷酰胺配体2d- Zn(II)络合物作为催化剂,我们开发了各种有机锌试剂与以下化合物的有效催化不对称1,2-加成/内酯串联反应。各种2-甲酰基苯甲酸甲酯用于构建光学富集的3-芳基或烷基取代的邻苯二甲酸酯,这是许多重要的手性药物和天然产物的重要组成部分。可以提供具有良好至优异产率(高达95%)和中等至良好对映选择性(高达89%)的相应产物。