Organocatalytic regioselective Michael additions of cyclic enones via asymmetric phase transfer catalysis
作者:Roberto Ceccarelli、Susanna Insogna、Marco Bella
DOI:10.1039/b612606e
日期:——
Cyclohexanone and cycloheptanone can be enantioselectively functionalized in the 3-position with up to 92% ee and 87% ee, respectively, by the base-promoted dimerization of the corresponding enones using 3,4,5-tribenzyloxybenzyl cinchoninium bromide, as a new effective catalyst.
环己酮和环庚酮可以通过3,4,5-三苄氧基苄基金鸡顿碱对相应烯酮的碱促进二聚作用,分别在3个位置分别以高达92%ee和87%ee的对映体进行对映选择性官能化。催化剂。