Cyclohexanones react rapidly at or below room temperature with Ph3P and XCCl3 (X = Br or Cl) in acetonitrile to give 1,1-dichloromethylene compounds in high yield; some α-methoxyimino β-(1,1-dichloro)methylene esters have been similarly prepared.
环己酮在室温或低于室温下与Ph 3 P和XCCl 3(X = Br或Cl)在
乙腈中迅速反应,可高收率得到1,1-二
氯亚甲基化合物。类似地制备了一些α-甲氧基亚
氨基β-(1,1-二
氯)亚甲基酯。