中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
甲基 3-苯基-DL-丙氨酸酯 | DL-phenylalanine methyl ester | 15028-44-1 | C10H13NO2 | 179.219 |
A procedure for the enantioselective synthesis of α-substituted glutamates and pyroglutamates via a cyclopropenimine-catalyzed Michael addition of amino ester imines is described. Enantioselectivities of up to 94% have been achieved, and a variety of functional groups were found to be compatible. The impact of the catalyst structure and imine substitution is discussed. Compared to other methods, this protocol allows for a broader and more enantioselective access to pyroglutamate derivatives.