Iodoalkenes give symmetrical couplings to dienes with complete retention of configuration when treated with organolithium reagents in the presence of catalytic amounts of manganese(II) salts. A catalytic cycle is proposed through lithium manganate derivatives and manganese(IV) derivatives.
当与在催化量的
锰(II)盐存在下的
有机锂试剂处理Iodoalkenes与配置的完全保留二烯得到对称的耦合。催化循环通过
锰酸
锂衍
生物和
锰(IV)衍
生物提出。