based on organocatalysis has been developed. Using a commercially available organocatalyst we demonstrate a direct highly enantioselective allylic electrophilic functionalization of alkylidene cyanoacetates and malononitriles with azodicarboxylates. The reaction is broad in scope and proceeds in high yields and with enantioselectivities up to 99%. Furthermore, we demonstrate the synthetic utility of the
已经开发了一种基于有机催化的催化对映选择性
烯丙基胺化的新策略。使用市售的有机催化剂,我们证明了亚烷基
氰基
乙酸酯和
丙二腈与偶氮二
羧酸酯的直接高度对映选择性烯丙基亲电官能化。该反应范围广,收率高,对映选择性高达 99%。此外,我们展示了形成的光学活性产物的合成效用:高度非对映选择性的 Diels-Alder 反应、还原和光学活性结构单元的形成,这些结构单元存在于各种重要的
生物活性化合物中,例如奎纳克林、
氯喹及其类似物。