Efficient bifunctional silver acetate catalyzed three asymmetric Mannich-type reactions with high reactivity, up to >95:5 diastereoselectivities and moderate to excellent enantioselectivities (up to 97% ee). External base is not required in this bifunctional catalytic procedure, in which acetate promotes the deprotonation.
                                    高效的双功能
醋酸银催化三种不对称Mannich反应,具有很高的反应活性,反应生成物的二对映体选择性高达>95:5,手性选择性中等至优秀(最高可达97% ee)。在这个双功能催化过程中,不需要外部碱,
醋酸促进了去质子化反应。