Hexachlorocyclotriphosphazene (HCCP)-Mediated Direct Formation of Thioethers and Ethers from Quinazolin-4(3H)-ones
作者:Baoxiang Hu、Xiaochu Zhang、Lili Sheng、Ming Guo、Zhenlu Shen、Xinquan Hu、Nan Sun、Weimin Mo
DOI:10.3390/molecules18055580
日期:——
A hexachlorocyclotriphosphazene (HCCP)-mediated direct formation of quinazoline (thio)ethers from quinazolin-4(3H)-ones has been developed. Treatment of quinazolin-4(3H)-ones with HCCP, diisopropylethylamine (DIPEA), and thiophenols resulted in formation of the corresponding 4-arylthioquinazoline derivatives in moderate to excellent yields. This method has also been utilized to prepare 4-aryloxyquinazoline and 4-alkoxyquinazoline derivatives using phenols and sodium alkoxides as the nucleophiles.
研究人员开发了一种由六氯环三磷苯(HCCP)介导的由喹唑啉-4(3H)-酮直接生成喹唑啉(硫)醚的方法。用 HCCP、二异丙基乙胺 (DIPEA) 和噻吩酚处理喹唑啉-4(3H)-酮,可生成相应的 4-芳硫基喹唑啉衍生物,产率为中等到极佳。这种方法还被用于以苯酚和烷氧基化钠为亲核剂制备 4-芳氧基喹唑啉和 4-烷氧基喹唑啉衍生物。