The synthesis and anticholinergic activities of 1, 1, 2, 5-tetramethyl-3-diphenylmethylenepyrrolidinium iodides are described. An unusual reaction of 3-methyl-1, 1-diphenyl-1, 4-butanediol (6) with acetonitrile-stannic chloride complex (Lora-Tamayo reaction) in phosphoryl chloride resulted in the formation of 2, 5-dimethyl-3-diphenylmethylene-1-pyrroline (9), involving the migration of the methyl group. The structure of 9 was confirmed by an alternative synthetic method.
描述了1, 1, 2, 5-四甲基-3-二苯基亚甲基
吡咯啉
碘化物的合成及其抗
胆碱活性。3-甲基-1, 1
-二苯基-1, 4-
丁二醇(6)与
乙腈-
氯化锡复合物(Lora-Tamayo反应)在
氯化
磷中的一种不寻常反应导致形成2, 5-二甲基-3-二苯基亚甲基-1-
吡咯啉(9),涉及甲基的迁移。通过另一种合成方法确认了9的结构。