公开(公告)号：US5276206A

公开(公告)日：1994-01-04

申请号：US61229

申请日：1993-05-17

申请人： Adolf Sicheneder ,  Bardo Becker

发明人： Adolf Sicheneder ,  Bardo Becker

IPC分类号： C07D277/62 ,  C07D277/72 ,  C07D209/02

CPC分类号： C07D277/62 ,  C07D277/72

摘要： 2-mercaptobenzothiazole and benzothiazole are prepared from dibenzothiazyl disulphide by reacting dibenzothiazyl disulphide in the presence of an alkali and/or alkaline earth hydroxide solution at temperatures from 40.degree. to 120.degree. C. until a constant pH value in the range from 8 to 10 has been reached, then treating the reaction mixture with an aqueous solution of mineral acids at temperatures from 10.degree. to 100.degree. C., and subsequently removing benzothiazole by distillation or extraction from the reaction mixture containing 2-mercaptobenzothiazole.

摘要翻译： 2-二甲基苯并噻唑和苯并噻唑由二苯并噻唑二硫化物通过在碱和/或碱土金属氢氧化物溶液存在下，在40至120℃的温度下，使二苯并噻唑二硫化物反应，直到8至10的恒定pH值为 然后在10℃至100℃的温度下用无机酸水溶液处理反应混合物，随后通过蒸馏或从含有2-巯基苯并噻唑的反应混合物中萃取除去苯并噻唑。