Benoxazolone-based ionic liquid catalyzed C–S bond construction for synthesis of benzothiazoles from 2-aminothiophenols and CO2 under ambient conditions

Abstract

[P4444][Benoxa] ionic liquid was discovered to be very effective for the synthesis of benzothiazoles via cyclization of 2-aminothiophenols with CO2 and hydrosilanes at ambient conditions, and a series of benzothiazoles were obtained in high yields.