developed, allowing a facile access to 2-trifluoromethyl-4-aminoquinolines in high yields. The reaction proceeds smoothly with or without the addition of sulfur and utilizes difluorocarbene as a C1 synthon under simply heating conditions. Mechanistic study reveals that in-situ generated thiocarbonyl fluoride, isothiocyanate or gem-difluoroalkene might act as the key reaction intermediates.
开发了CF 3 取代的亚
氨基亚锍叶立德(TFISY)、胺和(
三苯基膦)
二氟乙酸酯(PDFA)的热诱导多组分反应,可以轻松地以高产率获得
2-三氟甲基-4-氨基喹啉。无论添加或不添加
硫,该反应均顺利进行,并在简单的加热条件下利用
二氟卡宾作为C1合成子。机理研究表明,原位生成的
硫代碳酰
氟、异
硫氰酸酯或偕二
氟烯烃可能是关键的反应中间体。