Acyclic Oxyiminium Ions. Mannich Reactions and Addition of Grignard Reagents
作者:R Grigg、Z Rankovic、M Thoroughgood
DOI:10.1016/s0040-4020(00)00721-3
日期:2000.9
novel O-benzyl tertiary hydroxylamines in good to excellent yield. Benzotriazole mediated synthetic methodology has also been successfully developed to generate oxyiminium ions which react with Grignard reagents, to give novel O-benzyl tertiary hydroxylamines.
据报道在乙酸存在下由仲羟胺(4a,b和6a,b)和甲醛产生无环氧亚胺离子。用2-甲基呋喃,吡咯或吲哚捕获这些亲电试剂可得到一系列新的O-苄基叔羟胺,收率好至极好。苯并三唑介导的合成方法也已成功开发,可生成与格利雅试剂反应的氧亚胺离子,得到新颖的O-苄基叔羟胺。