Process for preparing 4-substituted imidazo 1,2-a!quinoxalines

摘要

Preparation of 4-substituted imidazo 1,2-a!quinoxalines by cyclizing a compound of the formula: ##STR1## with phosphorous oxychloride wherein X. sup.2 is a group --R.sup.5 or --NHR.sup.2 where R. sup.5 and R.sup.2 are hydrogen or various organo groups.