An Efficient Three-component, One-pot Synthesis of Quinazolines under Solvent-free and Catalyst-free Condition
作者:Subrahmanya Ishwar Bhat、U. K. Das、Darshak R. Trivedi
DOI:10.1002/jhet.2220
日期:2015.7
protocol for the synthesis of quinazolines in the absence of solvent and catalyst has been developed. 2,4‐Disubstituted quinazolines have been synthesized from three‐component one‐pot reactions of 2‐aminoaryl ketones, orthoesters, and ammonium acetate. The present method has advantages of operational simplicity, substrate generality, clean reaction, high yields (76–94%), and moderate reaction time. The plausible
Mechanistic Study of a Complementary Reaction System that Easily Affords Quinazoline and Perimidine Derivatives
作者:Zerong Daniel Wang、Joshua Eilander、Motoko Yoshida、Tianzhi Wang
DOI:10.1002/ejoc.201402854
日期:2014.12
consistent with our computational study on the thermal decomposition of thiourea to form hydrogen sulfide and carbodiimide. This reaction involves a coupling between 2-aminobenzophenone and carbodiimide generated in situ from thiourea to form 4-phenylquinazolin-2(1H)-imine intermediate, and the generation of sulfur-containing reducing agent from hydrogen sulfide and DMSO, which reduces 4-phenylquinazolin-2(1H)-imine