Diels–Alder reactions of polyfluorocyclohexa-1,3-dienes. Part V. Addition of cycloalkenes to octafluorocyclohexa-1,3-diene and dehydrofluorination of some of the adducts
作者:W. J. Feast、W. K. R. Musgrave、W. E. Preston
DOI:10.1039/p19720001527
日期:——
perfluorocyclohexa-1,3-diene (6) gives the expected Diels–Alder adducts with cyclohexene, cyclopentene, 1H,2H-octafluorocyclohexene, 1H,2H-hexafluorocyclopentene, and 1H,2H-tetrafluorocyclobutene; in the case of 1H,2H-tetrafluorocyclobutene two 2,2-difluorovinyldecafluorobicyclo[2,2,2]oct-2-enes and the dimer, 3,3,4,4,7,7,8,8-octafluorotricyclo[3,3,0,02,6]octane (4), were also isolated. Dehydrofluorination
全氟环己-1,3-二烯(6)得到预期的狄尔斯-阿尔德加合物与环己烯,环戊烯,1 H,2 H-八氟环己烯,1 H,2 H-六氟环戊烯和1 H,2 H-四氟环丁烯;在1 H,2 H-四氟环丁烯的情况下,有两个2,2-二氟乙烯基十氟双环[2,2,2]辛-2-烯和二聚体3,3,4,4,7,7,8,8,8-八氟三环还分离出[3,3,0,0 2,6 ]辛烷(4)。由1 H,2 H-八氟环己烯和1 H,2 H形成的加合物的脱氟化氢-六氟环戊烯得到全氟三环[6,2,2,0 2,7 ] -dodeca -2,6,9-三烯(10)和全氟三环[5,2,2,0 2,6 ] undeca-2,5,8 -三烯(8)。