Use of hexamethylphosphoramide chmpa in the alkylation of aromatic amines: synthesis of azetidines, pyrrolidines, piperidines and hexahydroazepines
作者:Eusebio Juaristi、Domingo Madrigal
DOI:10.1016/0040-4020(89)80091-2
日期:1989.1
The direct alkylation of -toluidine, as a model of aromatic amines, with 1,3-, 1,4-, 1,5- and 1,6-ditosylates, -dibromides or -dimesylates in HMPA as solvent affords the corresponding cyclic amines. The convenience of this reaction and some observed limitations are discussed.