Partially fluorinated heterocyclic compounds. Part 13. The formation of some furan derivatives from polyfluoroaryl prop-2-ynyl ethers
作者:Gerald M. Brooke、Derek I. Wallis
DOI:10.1039/p19810001417
日期:——
Pentafluorophenyl prop-2-ynyl ether (1) undergoes isomerisation to 2-fluoromethyl-4,5,6,7-tetrafluorobenzo[b]-furan (3) on distillation in vacuo over silica at 370 °C. The ether (1) undergoes reaction with benzene and p-xylene at 140 °C to give the 2-arylmethyl-4,5,6,7-tetrafluorobenzo[b]furan derivatives (4) and (8) respectively, while 1,3,4,5,6,7,8-heptafluoro-2-naphthyl prop-2-ynyl ether (2) reacts
五氟苯基丙-2-炔醚(1)在370℃的二氧化硅上真空蒸馏,然后异构化为2-氟甲基-4,5,6,7-四氟苯并[ b ]-呋喃(3)。醚(1)在140°C下与苯和对二甲苯反应,分别得到2-芳基甲基-4,5,6,7-四氟苯并[ b ]呋喃衍生物(4)和(8),而1, 3,4,5,6,7,8-七氟-2-萘丙-2-炔基醚(2)在140°C下与相同的溶剂反应生成相应的2-芳基甲基4,5,6,7 ,8,9-六氟萘并[2,1- b ]呋喃衍生物(9)和(10)。