A Sustainable Synthesis of 2-Benzoxazyl and 2-Benzothiazyl Ketones from Alkynyl Bromides and 2-Amino(thio)phenols Promoted by a Recyclable Catalytic System
作者:Liangyan Cui、Yan He、Xuesen Fan
DOI:10.1002/cjoc.201100472
日期:2012.4
An environmentally and economically sustainablesynthesis of 2‐benzoxazyl ketones and 2‐benzothiazyl ketones through FeCl3·6H2O catalyzed tandem reactions of alkynylbromides with 2‐amino(thio)phenols in [bmim]BF4 has been developed. Remarkable advantages of this new synthetic strategy include high efficiency, readily available starting materials, and recyclable catalyst and reaction medium.
A novel and practical synthesis of 2-benzoylbenzothiazoles and 2-benzylbenzothiazoles
作者:Xuesen Fan、Yan He、Yangyang Wang、Zaikun Xue、Xinying Zhang、Jianji Wang
DOI:10.1016/j.tetlet.2010.12.057
日期:2011.2
A novel methodology for the synthesis of 2-benzoylbenzothiazoles and 2-benzylbenzothiazoles through FeCl3 center dot 6H(2)O catalyzed, air oxidized tandem process from commercially available 2-aminothiophenols and phenylacetaldehydes by using an ionic liquid as both reaction medium and co-catalyst was developed. (C) 2011 Elsevier Ltd. All rights reserved.