N-Alkylation of anilines, carboxamides and several nitrogen heterocycles using CsF–Celite/alkyl halides/CH3CN combination
作者:Safdar Hayat、Atta-ur-Rahman、M Iqbal Choudhary、Khalid Mohammed Khan、Wilhelm Schumann、Ernst Bayer
DOI:10.1016/s0040-4020(01)00989-9
日期:2001.12
It has been found that the N-alkylation of aniline, carboxamides and heterocyclic compounds bearing an acidic hydrogen atom attached to nitrogen can be accomplished with alkyl halides in acetonitrile and cesium fluoride–celite employed as a solid base. In this manner, pyrrole, indole, pyrazole, imidazole, benzimidazole, carbazole, phthalimide, indazole, indoline, 2-pyrrolidinone, piperidine and 1,2
已经发现,苯胺,羧酰胺和带有与氢原子相连的酸性氢原子的杂环化合物的N-烷基化反应可以用乙腈中的烷基卤化物和氟化铯-硅藻土作为固体碱来完成。以这种方式,吡咯,吲哚,吡唑,咪唑,苯并咪唑,咔唑,邻苯二甲酰亚胺,吲唑,吲哚啉,2-吡咯烷酮,哌啶和1,2,4-三唑可以成功地烷基化。该方法是方便,有效的,并且通常仅产生N-烷基化产物。