Reactions of tetrafluoroethylene oligomers. Part 1. Some pyrolytic reactions of the pentamer and hexaher and of the fluorine adducts of the tetramer and pentamer
作者:Paul L. Coe、Simon F. Sellers、John Colin Tatlow、Harold C. Fielding、Graham Whittaker
DOI:10.1016/s0022-1139(00)82660-3
日期:1981.10
3-dimethylpentane (X), and perfluoro-3,4- dimethylhexane (III). Pyrolysis of IV in the presence of bromine gave (VI) and 3-bromo-3-trifluoromethyl-decafluoropentane (XI): with toluene, pyrolysis gare VlI and 3H-3-trifluoromethyldecafluoropentane (XII). Pyrolysis of II at 500° over glass gave perfluoro-1,2,3-trimethylcyclobutene (XIII) and perfluoro-2,3-dimethylpenta-1,3(E)- and (Z)-diene (XIV) and (XV) respectively
The fluorination of Butane over cobalt trifluoride
作者:James Burdon、Saleh T. Ezmirly、Thomas N. Huckerby
DOI:10.1016/s0022-1139(00)83070-5
日期:1988.8
The fluorination of butane overcobalttrifluoride has given a complex mixture of partially fluorinated compounds: 51 of these have been identified, comprising over 99% of the products. Most were polyfluorobutanes but 1-2% were polyfluoro-2-methylpropanes. The reaction has no synthetic utility. There was some selectivity in the fluorination: secondary C-H was converted into C-F more easily then primary
Noncatalytic manufacture of 1,1,3,3,3-pentafluoropropene from 1,1,1,3,3,3-hexafluoropropane
申请人:Rao Nott Mallikarjuna Velliyur
公开号:US20060094911A1
公开(公告)日:2006-05-04
1,1,3,3,3-Pentafluoropropene (CF
3
CH═CF
2
, HFC-1225zc) can be produced by pyrolyzing 1,1,1,3,3,3-hexafluoropropane (CF
3
CH
2
CF
3
, HFC-236fa) in the absence of dehydrofluorination catalyst at temperatures of from about 700° C. to about 1000° C. and total pressures of about atmosphere pressure in an empty, tubular reactor, the interior surfaces of which comprise materials of construction resistant to hydrogen fluoride.