Dichloro-fluoromethane

Di-0-isopropylidene-a-D-rtbo-hexofuranos-3-ulose (100) was treated with (chlorofluoromethylene)triphenylphosphorane (prepared by reaction of triphenylphosphine on difluorocarbene generated in situ by reaction of potassium ferf-butoxide with dichloro-fluoromethane), to give cis- and rans-3-C-(chlorofluoromethylene)-3-deoxy-l,2 5,6-di-0-isopropylidene-a-D-ribo- (101 and 103) and -xyfo-hexofuranoses (105 and 107), which, on treatment with lithium aluminum hydride, gave cis- and frans-3-deoxy-3-C-(fluoromethyl)-1,2 5,6-di-O-isopropylidene-a-D-rtbo- (102 and 104) and -xyZo-hexofura-... 

The disproportionation of chlorofluoromethanes is also catalyzed by iron(lll) halides,21 chromium oxyfluorides and other metal halides. With tron(III) chloride on activated carbon at temperatures above 300 C, for example, the compounds carbon Iclrafluoride, chloro-fluoromethane, trtchlorofluoromclhanc and carbon tetrachloride are obtained from dichloro-fluoromethane (Scheme 3) ... 

Trichlorofluoromethone, dichloro-fluoromethane — Electron capture Headspace analysis-GLC technique 0.005xKT12 mol kg-1 [502]... 

CARBON-TETRACHLORIDE TRICHLORO-FLUOROMETHANE OICHLORODI FLUOROMETHANE CHLOROTRI-FLUOROME7HANE CARBON-TETRAFLUORIDE CARBON MONOXIDE CARBON DIOXIDE CARBONYL-SULFIDE CARBON-DISULFIDE CHLOROFORM DICHLORO-FLUOROMETHANE CHLORODI-FLUOROMETHANE TRIFLUORO-METHANE TRIIODOMETHANE ISOTHIOCYANIC-ACID... 

Photochlorination of cyclopropane gave chlorocyclopropane (la) and 1,3-dichloro-propane. The latter was the major product at low temperature. Photochlorination with tert-h Ay hypochlorite gave mostly chlorocyclopropane (la). Methylcyclopropane reacted with chlorine to give predominantly l-chloro-2-methylcyclopropane (lb), but small amounts of acyclic products such as 2-chlorobutane, 1,3-dichlorobutane, and 1,3-dichloro-2-methyl-propane were also obtained. With ferr-butyl hypochlorite 4-chlorobut-l-ene was isolated as the only acyclic product. Photochlorination of 1,1-dimethylcyclopropane in trichloro-fluoromethane atO°C gave the chloromethylcyclopropane derivative 2 in 67% yield after immediate workup. 

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