An integration of electrooxidative cyclization and chemical oxidation was achieved. Electrochemical oxidation of alkenes having a nucleophilic moiety in the presence of DMSO gave cyclized alkoxysulfonium ions, which were converted to the corresponding ketones by treatment with triethylamine in a one-pot sequential manner. The method is also an effective tool for cyclization of 1,6-dienes affording five-membered ring diketones in high stereoselectivity.
实现了电氧化环合与
化学氧化的结合。在
DMSO存在下,含有亲核基团烯烃的电
化学氧化生成环合的烷氧基
硫鎓离子,通过一步法依次用
三乙胺处理转化为相应的酮。该方法也是高效实现1,6-二烯环化,高立体选择性生成五元环二酮的工具。