ECO-FRIENDLY METHOD FOR PREPARING 3,4-DIHYDROQUINOXALINE-2-AMINE DERIVATIVE BY ONE-POT THREE COMPONENT CONDENSATION

摘要

PURPOSE: A method for preparing 3,4-dihydroquinoxaline-2-amine derivative by one-pot three component condensation is provided to synthesize 3,4-dihydroquinoxaline-2-amine derivative of high yield.;CONSTITUTION: A method for preparing 3,4-dihydroquinoxaline-2-amine derivative comprises: a step of one-pot three component condensation of o-phenylene diamine of chemical formula 1, carbonyl compounds of chemical formula 2, and isocyanide derivatives of chemical formula 3 under the presence of brønsted acid catalyst. The catalyst is ethylene diamine dehydrochloride, ethylene diamine diacetate, o,o-diphenylmethylammonium acetic acid, o,o-diphenylmethylammonium trifluoro acetic acid, ammonium acetate, acetic acid, or ethylene dimaine tetra acetic acid.;COPYRIGHT KIPO 2013