Enantioselective anti-Mannich reaction catalyzed by modularly designed organocatalysts
作者:Swapna Konda、John C.-G. Zhao
DOI:10.1016/j.tet.2018.09.006
日期:2018.10
te was realized using the modularly designed organocatalysts (MDOs) self-assembled from cinchona alkaloid derivatives and (R)-pyrrolidien-3-carboxylic acid in the reaction media. The desired anti-Mannich products were obtained in good to excellent yields (up to 93%), excellent diastereoselectivities (up to 99:1 dr), and good to high enantioselectivities (up to 99% ee).
利用金鸡纳生物碱衍生物和( R )-吡咯烷-3-羧基自组装的模块化设计的有机催化剂(MDO),实现了醛和酮与(4-甲氧基苯基亚氨基)乙酸乙酯的反曼尼希反应的高度立体选择性方法反应介质中的酸。所需的抗曼尼希产物以良好到优异的产率(高达 93%)、优异的非对映选择性(高达 99:1 dr)和良好到高的对映选择性(高达 99% ee)获得。