Adducts of 2-aminothiophenol with acetylenic nitriles or esters and their conversion into benzothiazoles and/or 1,4-benzothiazines
作者:Gaetano Liso、Giuseppe Trapani、Vincenza Berardi、Andrea Latrofa、Paolo Marchini
DOI:10.1002/jhet.5570170435
日期:1980.6
The reaction between 2-aminothiophenol 1 and acetylenic nitriles or esters 2a-d leads to the vinyl thio-ethers 3a-d. The conversion of 3 into benzothiazoles 8 and/or 1,4-benzothiazines 9, in boiling dimethyl sulfoxide, has been achieved. A possible pathway involving benzothiazolines 5 as key intermediates is suggested.
2-氨基硫酚1与炔腈或酯2a-d之间的反应产生乙烯基硫醚3a-d。在沸腾的二甲基亚砜中已经实现了将3转化为苯并噻唑8和/或1,4-苯并噻嗪9。建议可能的途径涉及苯并噻唑啉5作为关键中间体。