ChemInform Abstract: A Metal‐Free and Recyclable Synthesis of Benzothiazoles Using Thiourea as a Sulfur Surrogate.

Abstract

A Metal-Free and Recyclable Synthesis of Benzothiazoles Using Thiourea as a Sulfur Surrogate. -Treatment of substrates (I) with thiourea and TFA gives benzothiazoles (IV) and TFA salts (V). Furthermore, an analogous two-step sequence allows the synthesis of unsymmetrical disulfides. -(YIN*, Y.; ZHOU, H.; LIU, X.; CHEN, H.; WU, F.; ZHANG, H.; TAO, R.; CHENG, F.; FENG, Y.; Tetrahedron Lett. 56 (2015) 13, 1709-1712, http://dx.