公开(公告)号：US5254772A

公开(公告)日：1993-10-19

申请号：US849604

申请日：1992-03-12

申请人： Wolfgang W. Dukat ,  John H. Holloway ,  Eric G. Hope ,  Matthias Rieland ,  Paul J. Townson ,  Richard L. Powell

发明人： Wolfgang W. Dukat ,  John H. Holloway ,  Eric G. Hope ,  Matthias Rieland ,  Paul J. Townson ,  Richard L. Powell

IPC分类号： C07C17/10 ,  C07C17/20 ,  C07C19/08 ,  C07C17/00

CPC分类号： C07C17/10 ,  C07C17/208

摘要： A process for the preparation of an alkane containing fluorine by contacting a halogenated alkane containing at least one hydrogen atom and at least one halogen atom selected from chlorine, bromine and iodine with a transition metal fluoride selected from osmium hexafluoride, iridium hexafluoride, rhenium hexafluoride, ruthenium pentafluoride, chromium pentafluoride, vanadium pentafluoride, rhenium heptafluoride and uranium hexafluoride, whereby to replace at least one hydrogen atom or at least one chlorine, bromine or iodine atom in said halogenated alkane starting material by a fluorine atom.Use of certain of the defined transition metal fluorides, e.g. OsF.sub.6, IrF.sub.6 and ReF.sub.6 allows the selective replacement of halogen by fluorine, while others, e.g. UF.sub.6, VF.sub.5 and ReF.sub.7 allow selective replacement of hydrogen by fluorine.