Valence-bond isomer chemistry. Part 11 [1]. Thermal rearrangement of the Diels-Alder adduct of hexafluorobicyclo-[2.2.0]hexa-2,5-diene and 2,3-Dimethylbuta-1,3-diene: a [1,3] sigmatropic shift of fluorine
作者:M.G. Barlow、R.N. Haszeldine、C.J. Peck
DOI:10.1016/s0022-1139(00)82676-7
日期:1981.10
Flow pyrolysis of the Diels-Alder adduct of hexafluorobicyclo[2.2.0]hexa-2,5-diene and 2,3-dimethylbutadiene gives an unusual product, the Diels-Alder adduct of hexafluorobenzene and 2,3-dimethylbuta-1,3-diene, and thence via an exclusive [1,3] sigmatropic fluorine shift, its isomeric triene. Loss of hydrogen fluoride from the unusual Diels-Alder adduct readily affords 1,2,3,4-tetrafluoro-6,7-dimethylnaphthalene
六氟双环[2.2.0]己2,5-二烯和2,3-二甲基丁二烯的狄尔斯-阿尔德加合物的流热解产生了不同寻常的产物,六氟苯和2,3-二甲基丁烯-1,3的狄尔斯-阿尔德加合物-二烯,并因此通过排他性的[1,3]σ氟转移,即其异构体三烯。异常的Diels-Alder加合物损失的氟化氢很容易得到1,2,3,4-四氟-6,7-二甲基萘。