A facile preparation of 2-bromodifluoromethyl benzo-1,3-diazoles and its application in the synthesis of gem-difluoromethylene linked aryl ether compounds
作者:Haizhen Jiang、Shijie Yuan、Yeshan Cai、Wen Wan、Shizheng Zhu、Jian Hao
DOI:10.1016/j.jfluchem.2011.08.008
日期:2012.1
developed through a one-pot process of reaction of 2-OH, 2-SH, or 2-NH2 substituted aniline with bromodifluoroacetic acid in the presence of 3 molar equivalents of CBr4 and Ph3P in refluxing toluene. 2-Bromodifluoromethyl benzo-1,3-thiazole (2b) was successfully utilized in the preparation of gem-difluoromethylene linked aryl ether compounds through the reaction with phenolates or thiophenolate in DMF
通过一锅法反应被2-OH,2-SH或2-NH 2取代的2-溴二氟甲基苯并-1,3-二唑作为新型的含CF 2 Br杂环结构单元的简便方法在回流甲苯中,在3摩尔当量的CBr 4和Ph 3 P存在下,苯胺与溴二氟乙酸混合。通过与苯酚盐或硫代苯酚盐在DMF中的高收率反应,成功地将2-溴二氟甲基苯并-1,3-噻唑(2b)用于制备宝石-二氟亚甲基连接的芳基醚化合物。