hoxycarbonylmethylene)-2,3,4,5-tetrahydroimidazole undergoes annulatio
n with a variety of 1,3-bis-electrophiles (alpha,beta-unsaturated acid
derivatives, beta-ketoesters, se-unsaturated aldehydes) to form imida
zo[1,2-a]pyridines. (C) 1998 Elsevier Science Ltd. All rights reserved
.