Simple stepwise route to 1-substituted 2-amino-3-ethoxycarbonylindolizines
作者:Gennadiy E. Khoroshilov、Natalia M. Tverdokhleb、Vladimir S. Brovarets、Eugene V. Babaev
DOI:10.1016/j.tet.2013.02.049
日期:2013.5
2-Chloro-N-ethoxycarbonylmethylpyridinium bromide reacts with substituted acetonitriles in two steps; the initially formed pyridine anhydro baseses undergo further ring closure to 2-amino-3-ethoxycarbonylindolizines.