A highly efficient way to capture CX2 (O, S) mildly in reusable ReILs at atmospheric pressure

Abstract

The highly efficient transformation of CX₂ (O, S) into valuable chemicals at atmospheric pressure is an attractive topic. A novel method of preparing quinazoline derivatives by capturing CX₂ (O, S) in reusable, room-temperature, reversible ionic liquids (ReILs) with high yields (up to 98%) at 40 °C and atmospheric pressure was developed in this paper. The different reaction conditions were optimized and the products were easily separated from the ReILs which could be reused at least six times without considerable loss in yield. The plausible mechanism of capturing CX₂ (O, S) in the ReILs was proposed and it provides a green, efficient protocol to capture CX₂ (O, S) in ReILs to synthesize quinazoline derivatives.