Highly Regioselective Route to Substituted Imidazo[1,2-a]quinoxalines
作者:Balendu Singh、Anand Acharya、Hiriyakkanavar Ila
DOI:10.2174/1570178615666180108154309
日期:2018.4.12
A new synthesis of unsymmetrically substituted imidazo[1,2-a]quinoxalines via regioselective displacement of 3-chloro group in 2-(methylthio)-3-chloroquinoxalines by aminoacetaldehyde dimethylacetal and subsequent-acid mediated intramolecular cyclization of the resulting adducts is reported in this study. The utility of the 3-(methylthio) group in these imidazoquinoxalines is also demonstrated by conversion