Modified cinchona alkaloid-catalysed enantioselective [4+4] annulations of cyclobutenones and 1-azadienes
作者:Bo Jiang、Wei Du、Ying-Chun Chen
DOI:10.1039/d0cc02836c
日期:——
An asymmetric [4+4] annulation reaction between β-substituted cyclobutenones and diverse 1-azadienes is developed under the catalysis of modified cinchona alkaloids.