An efficient synthetic route to biologically relevant 2-phenylbenzothiazoles substituted on the benzothiazole ring
作者:Ashley A. Weekes、Mark C. Bagley、Andrew D. Westwell
DOI:10.1016/j.tet.2011.08.004
日期:2011.10
focus on their unsubstituted ring counterparts. Here we describe a new concise and efficient synthetic route to biologically relevant 2-phenylbenzothiazoles in high yield from the reaction of substituted 2-aminothiophenol disulfides and benzaldehydes, promoted by the inexpensive and non-toxic inorganic oxidant sodium metabisulfite in DMSO at 120 °C. Our new method is tolerant of a range of substituents
某些在苯并噻唑环上含有取代基的2-苯基苯并噻唑具有重要的生物学特性,但是迄今为止描述的2-苯基苯并噻唑的大多数合成方法都集中在它们的未取代环对应物上。在这里,我们描述了一种新的简洁有效的合成路线,该路线是由廉价的且无毒的无机氧化剂偏亚硫酸氢钠在DMSO中于120°C促进的,是由取代的2-氨基硫代苯酚二硫化物与苯甲醛的反应以高收率获得生物相关的2-苯基苯并噻唑的新方法。我们的新方法可耐受苯并噻唑和苯环上的一系列取代基,并且无需柱色谱即可有效获得取代的2-苯基苯并噻唑。