Synthesis of pyrrolidine derivatives with pharmacological activity. XI. The Lora-Tamayo reaction of 3-methyl-1,1-diphenyl-1,4-butanediol with acetonitrile-stannic chloride complex. Synthesis of 1,2,5-trimethyl-3-diphenylmethylenepyrrolidines.
作者:SADAO OHKI、TATSUO NAGASAKA、NAGANORI OZAWA、TOKUHIRO WATANABE、HIDEAKI MATSUDA、FUMIKO HAMAGUCHI
DOI:10.1248/cpb.33.2996
日期:——
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。