2368-01-6

Upstream product

• 77-47-4 hexachlorocyclopentadiene 
• 3824-97-3 1,2,3-Trichloro-3,4,4,5,5-pentafluorocyclopentene 

Downstream Products

• 3824-97-3 1,2,3-Trichloro-3,4,4,5,5-pentafluorocyclopentene 
• 1759-63-3 1,2,2,3,3,4,4-heptafluoro-5-chlorocyclopentene 

Relevant academic research and scientific papers

Synthesis of 1,1,2,2,3,3,4-heptafluorocyclopentane as a new generation of green solvent

1,1,2,2,3,3,4-Heptafluorocyclopentane is a new generation of green solvent. It was synthesized by the liquid-phase fluorination reactions from hexachlorocyclopentadiene to 1-chloroheptafluoro-cyclopentene in the presence of KF in DMF and by the vapor-phase hydrogenation reaction from 1-chloroheptafluorocyclopentene to 1,1,2,2,3,3,4-heptafluorocyclopentane in the presence of Pd-based hydrogenation catalyst. Quantum chemical calculations for the isomers energies using Gaussian09 were conducted to verify the chemical equilibriums between isomers of trichloropentafluorocyclopentene or dichlorohexafluorocyclopentene in the fluorination reactions. Possible mechanisms for 1,1,2,2,3,3,4-heptafluorocyclopentane synthesis were proposed.

Method for simultaneously preparing dichlorohexafluorocyclopentene isomers

The invention relates to a method for simultaneously preparing dichlorohexafluorocyclopentene isomers. The method comprises the following steps: taking hydrogen fluoride and trichloropentafluorocyclopentene as reaction raw materials; carrying out gas-phase catalysis fluorine-chlorine exchange reaction in the presence of a fluorination catalyst to obtain the dichlorohexafluorocyclopentene isomers. By adopting the method provided by the invention, 1,2-dichlorohexafluorocyclopentene, 1,3-dichlorohexafluorocyclopentene and 1,4-dichlorohexafluorocyclopentene can be coproduced, wherein the single-pass yield of the 1,3-dichlorohexafluorocyclopentene and the 1,4-dichlorohexafluorocyclopentene is relatively high and the sum of the yield of the 1,3-dichlorohexafluorocyclopentene and the 1,4-dichlorohexafluorocyclopentene is greater than 57 percent; the raw materials are easy to obtain and the fluorination catalyst has stable activity, so that the method is suitable for simultaneously and continuously preparing the 1,2-dichlorohexafluorocyclopentene, the 1,3-dichlorohexafluorocyclopentene and the 1,4-dichlorohexafluorocyclopentene in a large scale in a gas phase.

MANUFACTURING METHOD OF 1-CHLOROHEPTAFLUOROCYCLOPENTENE

PROBLEM TO BE SOLVED: To provide a method for manufacturing 1-chloroheptafluorocyclopentene at high yield under a moderate reaction condition. SOLUTION: A manufacturing method of 1-chloroheptafluorocyclopentene includes conducting a gas phase reaction of a raw material and hydrogen fluoride at 290-410°C for 15-40 sec. in presence of a burned body catalyst. The raw material contains at least one of 1,3-dichlorohexafluorocyclopenetene and 1,4-dichlorohexafluorocyclopenetene. The burned body catalyst has Cr, Zr and one or more kind of metal selected from Mg, Ni, Al, Fe, La, Sm, Co, W and Mo. A ratio of the substance quantity of the hydrogen fluoride to the substance quantity of 1,3-dichlorohexafluorocyclopenetene or 1,4-dichlorohexafluorocyclopenetene is preferably 20-50. SELECTED DRAWING: None COPYRIGHT: (C)2018,JPOandINPIT

Method for preparing halogenated pentacyclic olefin by gas-phase isomerization reaction

The invention relates to a method for preparing halogenated pentacyclic olefin by gas-phase isomerization reaction. The method comprises the following steps of: by adopting the halogenated pentacyclic olefin C5HxFyClz as a material, under the existence of an isomerization catalyst, generating the gas-phase isomerization reaction to obtain isomers of the halogenated pentacyclic olefin, wherein X is an integer from 0 to 2, Y is an integer from 4 to 7, Z is an integer from 0 to 4, the sum of X and Y and Z is 8, and the isomerization catalyst is prepared by adopting at least one of lithium fluoride, potassium fluoride, sodium fluoride, rubidium fluoride or cesium fluoride as an active component and loading the active component on at least one of carriers such as aluminium fluoride, magnesium fluoride, iron fluoride, chromium fluoride and zinc fluoride. The method has the advantages that the material is easy to obtain, the isomerization catalyst is low in price, the yield of the isomer is higher, and the method is applicable to large-scale preparation of the isomers of the halogenated pentacyclic olefin by gas-phase reaction.

Method for simultaneously preparing dichlorohexafluorocyclopentene isomers

The invention relates to a method for simultaneously preparing dichlorohexafluorocyclopentene isomers. The method comprises the following steps: a raw material perhalocyclopentene or/and perhalocyclopentadiene undergo(es) a liquid phase fluorine-chlorine exchange reaction in the presence of a fluorination reagent and a solvent under a stirring condition to obtain four trichloropentafluorocyclopentene isomers, and one or more of the four trichloropentafluorocyclopentene, adopted as a raw material, undergo(es) a fluorine-chlorine exchange reaction in the presence of the fluorination reagent and the solvent to obtain the dichlorohexafluorocyclopentene isomers. The method has the advantages of easily available raw materials, cheap fluorination reagent, high yield of the isomers, and suitableness for simultaneously preparing perhalocyclopentadiene isomers through a large-scale liquid phase reaction.

chlorine fluorine link pentene isomer method of preparation (by machine translation)

The invention relates to a chlorine fluorine link pentene isomer of formula (II) method, in the solvent dimethyl formamide, dimethyl sulfoxide or sulfolane in, in order to type (I) chlorine fluorine link pentene as the raw material, the catalyst ammonium fluoride, ammonium bifluoride, potassium fluoride, lithium fluoride, sodium fluoride, the presence of or rubidium fluoridecesium fluoride, obtained by isomerization reaction occurs. The present invention provides the technical method not only raw materials toxicity is relatively small, the mild reaction conditions, the reaction is easy to control, and pentene chlorine fluorine link isomeric compound of higher yield, easy industrialization. (by machine translation)

Method for simultaneously preparing trichloropentafluorocyclopentene isomers

The invention relates to a method for simultaneously preparing trichloropentafluorocyclopentene isomers. The method is characterized in that a raw material perhalocyclopentene or/and perhalocyclopentadiene undergoes a liquid phase fluorine-chlorine exchange reaction in the presence of a fluorination reagent and a solvent under a stirring condition to obtain the following three trichloropentafluorocyclopentene isomers: 1,2,4-trichloropentafluorocyclopentene, 1,2,3-trichloropentafluorocyclopentene, 1,3,3-trichloropentafluorocyclopentene and 1,4,4-trichloropentafluorocyclopentene. The method has the advantages of easily available raw material, cheap fluorination reagent, high yield of the isomers, and suitableness for simultaneously preparing the trichloropentafluorocyclopentene isomers through a large-scale liquid phase reaction.