Novel Syntheses of Heterocycles with N-(1-Haloalkyl)azinium Halides. Part V. Preparation of N-Substituted 1,4-Dihydropyridines
作者:Jean-Jacques Vanden Eynde、Annie Mayence、André Maquestiau、Ernst Anders
DOI:10.1080/00397919208021145
日期:1992.12
Abstract Thirty N-substituted Hantzsch 1,4-dihydropyridines were prepared under mild and neutral conditions from N-substituted enaminocarbonyl derivatives and aldehydes activated under the form of N-(1-chloroalkyl)pyridinium chlorides by means of thionyl chloride and pyridine. The scope of the method is discussed.