85063-55-4Relevant articles and documents
Ligand- and solvent-free synthesis of 2-aminobenzothiazoles by copper-catalyzed tandem reaction of 2-haloanilines with isothiocyanates
Yao, Ruiya,Liu, Haiyi,Wu, Yichao,Cai, Mingzhong
, p. 109 - 113 (2013)
We report an environmentally friendly, efficient and practical method for the synthesis of 2-aminobenzothiazoles by a copper(II)-catalyzed tandem reaction of 2-haloanilines with isothiocyanates under ligand- and solvent-free conditions in air. The developed methodology conforms to the principles of 'green chemistry' and addresses the shortage of such methods for the synthesis of 2-aminobenzothiazoles. The reaction is quite general and generates a variety of 2-aminobenzothiazoles in good to excellent yields. Copyright
DDQ-promoted C-S bond formation: Synthesis of 2-aminobenzothiazole derivatives under transition-metal-, ligand-, and base-free conditions
Wang, Rui,Yang, Wen-Juan,Yue, Liang,Pan, Wei,Zeng, Hong-Yao
experimental part, p. 1643 - 1648 (2012/08/07)
A transition-metal-free method for the intramolecular S-arylation of o-halobenzothiaoureas via DDQ-mediated leading to the 2-aminobenzothiazole derivatives is reported. The reactions are performed at room temperature under ligand- and base-free conditions with good to excellent yields. Georg Thieme Verlag Stuttgart · New York.
Synthesis of 2-aminobenzothiazoles via copper(I)-catalyzed cross-coupling with part-per-million catalyst loadings
Sun, Ya-Lei,Zhang, Yuan,Cui, Xiao-Hui,Wang, Wei
supporting information; experimental part, p. 1174 - 1178 (2011/07/09)
An efficient protocol has been developed for the preparation of 2-aminobenzothiazoles via a copper(I)-catalyzed tandem reaction of 2-iodoanilines with isothiocyanates at very low catalyst loadings [typically 50ppm of copper(I) iodide (CuI)]. A variety of 2-iodoanilines could be cross-coupled with isothiocyanates, affording 2-aminobenzothiazoles in moderate to good yields (49-93%) under the given conditions. The turnover number (TON) of this reaction reaches 67,000 and the reaction could be scaled up, at least, to the gram-scale. Copyright