Preparation of Primary Amines by the Alkylation of<i>O</i>-Sulfonyloximes of Benzophenone Derivatives with Grignard Reagents
作者:Hironori Tsutsui、Tomoko Ichikawa、Koichi Narasaka
DOI:10.1246/bcsj.72.1869
日期:1999.8
electrophilic amination of Grignard reagents with benzophenone O-sulfonyloxime derivatives. 4,4′-Bis(trifluoromethyl)benzophenone O-sulfonyloximes react with alkyl Grignard reagents in the presence of a catalytic amount of CuCN in tetrahydrofuran-hexamethylphosphoric triamide to give N-alkylimines, which are readily hydrolyzed to primary amines. 3,3′,5,5′-Tetrakis(trifluoromethyl)benzophenone O-p-tolylsulfonyloxime
伯胺是通过格氏试剂与二苯甲酮 O-磺酰肟衍生物的亲电胺化制备的。4,4'-双(三氟甲基)二苯甲酮 O-磺酰肟在催化量的 CuCN 存在下在四氢呋喃-六甲基磷酰三胺中与烷基格氏试剂反应,生成 N-烷基亚胺,后者很容易水解为伯胺。3,3',5,5'-四(三氟甲基)二苯甲酮 Op-tolylsulfonyloxime 用芳基格氏试剂在醚-甲苯中芳基化为相应的 N-芳基亚胺,所得亚胺水解得到苯胺衍生物。