Various 2-ethylsulfanyl-3-trifluoromethylfurans were obtained, in moderate to good yields, using a two-step procedure, from perfluoroketene dithioacetals as starting materials. Reaction tolerated a large variety of substituents on the furan nucleus. Mechanism of cyclization was also proposed based on the electronic properties of aryl and heteroaryl substituents.
使用两步法,以
全氟乙烯酮二
硫缩醛为起始原料,以中等至良好的产率获得了各种2-乙基
硫烷基-3-三
氟甲基
呋喃。反应可耐受
呋喃核上的各种取代基。还基于芳基和杂芳基取代基的电子性质,提出了环化机理。