2-oxo-3-butenoate esters as dienophiles and their utility in a novel synthesis of pyrroles
作者:Peter A. Jacobi、Guolin Cai
DOI:10.1016/s0040-4039(00)74324-3
日期:1991.4
Trisubstituted pyrroles of type 8 have been prepared in a regiospecific fashion by a two step sequence involving Diels-Alder reaction of 2-oxo-3-butenoate esters 1 with 2-alkoxy-1,3-pentiadiene derivatives 13, followed by ozonolysis and Paal-Knorr cyclization.