Alkylation of an imidazolidine enaminoester: A new sequence for the Cα-alkylation of 4,5-dihydroimidazoles
作者:Raymond C.F Jones、Pravin Patel、Simon C Hirst、Ian Turner
DOI:10.1016/s0040-4020(97)00752-7
日期:1997.8
1-Benzyl-2-(ethoxycarbonylmethylene)-2,3 undergoes preferred C-alkylation with halogenoalkanes, dihalogenoalkanes and epoxides: subsequent removal of of the ethoxycarbonyl group provides a new route to 2-alkyl-4,5-dihydroimidazoles. 1,3-Dihalogenoalkanes afford imidazo[1,2-a]pyridines via C,N-dialkylation. (C) 1997 Elsevier Science Ltd.