Iron-Catalyzed Tandem Reactions of <i>ortho</i>-Aminobenzenethiols with Isothiocyanates Leading to 2-Aminobenzoazoles Under Ligand- and Solvent-Free Conditions
Abstract An efficient route to synthesize a variety of 2-aminobenzoazoles has been discovered. It involves the reaction of ortho-aminobenzenethiols with isothiocyanates via iron-catalyzed tandem addition-annulations process under ligand and solvent free conditions on silica gel surface. GRAPHICAL ABSTRACT
Studies on the Thiazoles Obtained by Direct Thiocyanogenation<sup>1</sup>
作者:R. Q. Brewster、F. B. Dains
DOI:10.1021/ja01299a018
日期:1936.8
Merrifield resin supported phenanthroline–Cu(I): a highly efficient and recyclable catalyst for the synthesis of 2-aminobenzothiazoles via the reaction of 2-haloanilines with isothiocyanates
作者:Jin Yang、Pinhua Li、Lei Wang
DOI:10.1016/j.tet.2011.05.121
日期:2011.8
recyclable catalyst in the reaction of 2-halobenzenamines with isothiocyanates for the synthesis of 2-aminobenzothiazoles. The reactions were applicable to a variety of 2-halobenzenamines and isothiocyanates, and generated the corresponding 2-aminobenzothiazoles in good yields under mild reaction conditions. Moreover, the catalyst was quantitatively recovered from the reaction mixture by a simple filtration
312. The unsaturation and tautomeric mobility of heterocyclic compounds. Part X. The effect of ethoxyl ions on the methylation of 5-substituted 1-anilinobenzthiazoles, and the ultra-violet absorption spectra of 5-bromo-1-anilinobenzthiazole and of its N-methyl derivatives