Perkin communications. A new sequence for the C<sup>α</sup>-alkylation of 4,5-dihydroimidazoles
作者:Raymond C. F. Jones、Simon C. Hirst、Ian Turner
DOI:10.1039/p19910000953
日期:——
The C-alkylation of 1-benzyl-2-(ethoxycarbonylmethylene)-2,3,4,5-tetrahydroimidazole with halogeno- and dihalogeno-alkanes is described; subsequent removal of the ethoxycarbonyl group provides a new route to 2-alkyl-4,5-dihydroimidazoles. 1,3-Dihalogenoalkanes afford imidazo[1,2-a]pyridines.