文献类型：期刊文献

英文题名：The facile synthesis of benzothiazolylideneacetates and 1,4-benzothiazines through a highly controllable oxidation of benzothiazolylacetates

作者：Pi, Hong-Jun[1];Liu, Hua[1];Du, Wenting[1];Deng, Wei-Ping[1]

机构：[1]E China Univ Sci & Technol, Sch Pharm, Shanghai 200237, Peoples R China

年份：2009

卷号：50

期号：31

起止页码：4529

外文期刊名：TETRAHEDRON LETTERS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000267672700035)，CCR-EXPANDED(收录号:WOS:000267672700035)】；

基金：Financial support from the Natural Science Foundation of China (Grant No. 20602011), and the Shanghai Committee of Science and Technology (Grant No. 06PJ14023), the "111" Project (No. 1307023), and New Century Excellent Talents in University, the Ministry of Education of China (Grant No. NCET-07-0283) is acknowledged.

语种：英文

摘要：The synthesis of benzothiazolylideneacetates and 1,4-benzothiazine was found to be highly controllable via simple exchange of corresponding oxidants. It turned out that the treatment of benzothiazolylacetates with m-CPBA gave 1,4-benzothiazines via oxidative ring expansion process, and with DDQ gave benzothiazolylideneacetates via dehydrogenation, in good yield, respectively. The structures of both skeletons were confirmed by their X-ray diffractions. A previously reported method for the synthesis of benzothiazolylideneacetates was thus proved to be incorrect. (C) 2009 Elsevier Ltd. All rights reserved.