Reaction of hexafluorothioacetone dimer with indoles, pyrroles, furans and thiophenes
作者:Viacheslav A. Petrov、Rebecca Dooley、Alexander A. Marchione、Will Marshall
DOI:10.1016/j.jfluchem.2015.11.006
日期:2016.2
absence of catalyst unexpectedly resulted in the formation of indoles bearing aC(CF3)2S2CH(CF3)2 group in the 3-position. Pyrrole, 2-Ethyl-1H-pyrrole and 2,4-dimethyl-1H-pyrrole were found to be more reactive toward 1, giving the corresponding 1:1 adducts, while both furan and thiophene were not active toward 1 even at elevated temperature. Activated 2,3-dimethylfuran gave the corresponding 1:1 adduct in
在CsF催化剂存在下,吲哚与2,2,4,4-四(三氟甲基)-1,3-二硫杂环丁烷1的反应导致快速且高收率地形成了带有SCH(CF 3)2基团的吲哚。 3位。在没有催化剂的情况下进行的相同反应出乎意料地导致形成在3-位带有C(CF 3)2 S 2 CH(CF 3)2基团的吲哚。发现吡咯,2-乙基-1H-吡咯和2,4-二甲基-1H-吡咯对1更具反应性,产生相应的1:1加合物,而呋喃和噻吩对1均无活性即使在高温下。活化的2,3-二甲基呋喃,得到相应的1:与反应1加合物1,同时兼具2,5-二甲基呋喃和2,5-二甲基噻反应用1在高温下得到相应的烯产物。