α-methylene-γ-lactam products in good yields (up to 79%) as single diastereomers. The reactions proceed efficiently when AgOTf is used as an anion exchange catalyst with a 20 mol % loading at 80 °C. Computational studies were performed to investigate the reaction mechanism, and the findings support the role of the −TMS group in reducing the reaction barrier of the key cyclization step.
已开发出
3,4-二氢异喹啉与α,β-不饱和酰
氯之间的催化氮杂-Nazarov环化反应,以高收率(高达79%)作为单一非对映异构体获得α-亚甲基-γ-内酰胺产品。当AgOTf用作阴离子交换催化剂时,在80°C下负载量为20 mol%时,反应有效进行。进行了计算研究以研究反应机理,并且该发现支持-TMS基团在减少关键环化步骤的反应障碍中的作用。