Oxidative free radical cyclizations of β-ketoesters 1, 5, 11, and 14 with Mn(OAc)3·2H2O and Cu(OAc)2·H2O proceed in moderate yield to give seven- and eight-membered rings. The regiochemistry of the cyclization and oxidative termination are described.
β
酮酯的氧化自由基环化1,5,11,和14与
锰(OAC)3 ·2H 2 O和
铜(OAC)2 ·H 2 ö继续在适中的产率,得到七和八元环。描述了环化和氧化终止的区域
化学。