作者:Alan R. Katritzky、Rachel M. Witek、Valerie Rodriguez-Garcia、Prabhu P. Mohapatra、James W. Rogers、Janet Cusido、Ashraf A. A. Abdel-Fattah、Peter J. Steel
DOI:10.1021/jo050670t
日期:2005.9.1
Benzotriazole reagents for thioacylation (RCSBt), thiocarbamoylation (RR'NCSBt), aryl/alkoxythioacylation (ROCSBt), and aryl/alkylthiothioacylation (RSCSBt) are synthesized, and their utility is assessed by syntheses of representative heteroaryl thioureas 3a-g, thioamides 15a-s, thionoesters 16a-h, thiocarbamates 17a-e, dithiocarbamates 18a-d, thiocarbonates 19a-c, and dithiocarbonates 20a-c.
Synthesis of 2-<i>N</i>/<i>S</i>/<i>C</i>-Substituted Benzothiazoles via Intramolecular Cyclative Cleavage of Benzotriazole Ring
作者:Dhananjay Kumar、Bhuwan B. Mishra、Vinod K. Tiwari
DOI:10.1021/jo4024107
日期:2014.1.3
The synthesis of numerous 2-N/S/C-substituted benzothiazoles was achieved from substituted thiocarbonylbenzotriazoles via free-radical intramolecular cyclative cleavage of the benzotriazole ring in the presence of (TMS)3SiH and AIBN under mild conditions. The developed methodology demonstrates significant compatibility under microwave conditions and is important as it avoids the use of toxic metals
在温和条件下,在(TMS)3SiH和AIBN的存在下,通过苯并三唑环的自由基分子内环化裂解,由取代的硫代羰基苯并三唑实现了许多2-N / S / C-取代的苯并噻唑的合成。所开发的方法论证明了在微波条件下的显着兼容性,并且由于避免了使用有毒金属进行自由基环化,因此非常重要。