Cu(I)-catalyzed enantioselective [3 + 2] cycloaddition reaction of 1-alkylallenylsilane with alpha-imino ester: asymmetric synthesis of dehydroproline derivatives

Cu(I)-catalyzed enantioselective [3 + 2] cycloaddition reaction of 1-alkylallenylsilane with alpha-imino ester: asymmetric synthesis of dehydroproline derivatives