2252-87-1

Basic information

• Product Name: 2,3-dichloro-3,3-difluoroprop-1-ene
• Synonyms: 2,3-dichloro-3,3-difluoroprop-1-ene
• CAS NO: 2252-87-1
• Molecular Weight: 146.952
• Mol File: 2252-87-1.mol

Chemical Properties

• CAS DataBase Reference: 2,3-dichloro-3,3-difluoroprop-1-ene(CAS DataBase Reference)
• NIST Chemistry Reference: 2,3-dichloro-3,3-difluoroprop-1-ene(2252-87-1)
• EPA Substance Registry System: 2,3-dichloro-3,3-difluoroprop-1-ene(2252-87-1)

Safety Data

• Hazardous Substances Data: 2252-87-1(Hazardous Substances Data)

Upstream product

• 2730-62-3 2-chloro-1,1,1-trifluoropropene 
• 21700-31-2 1,1,1,2,3-pentachloro-propane 
• 10436-39-2 1,1,2,3-Tetrachloropropene 

Downstream Products

• 2730-62-3 2-chloro-1,1,1-trifluoropropene 
• 772-51-0 3-Fluor-2,3-dichlor-1-phenyl-propen-⁽²⁾ 

Relevant articles and documents

Catalytic gas-phase fluorination of 1,1,2,3-tetrachloropropene to 2-chloro-3,3,3-trifluoropropene over the fluorinated Cr2O3-based catalysts

Gas-phase fluorination of 1,1,2,3-tetrachloropropene to 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) was investigated over the fluorinated Cr2O3 catalysts with and without promoters. The reaction conditions showed significantly effects on product distribution including temperature, molar ratio of reactants and contact time. The selectivity to HCFO-1233xf was favored under relative higher temperature, larger HF/1,1,2,3-tetrachloropropene ratio and shorter contact time. Based on the data of product distribution over the fluorinated Cr2O3 catalyst, a possible reaction path involving complicated consecutive steps was proposed including the addition/elimination and the direct Cl/F exchange. The XRD, XPS and Raman results indicated that introducing Mg, Ca and La onto Cr2O3 promoted the formation of highly dispersed CrOxFy species during the pre-fluorination process, whereas the presence of Y inhibited the formation of CrOxFy. The BET results showed that the addition of La and Y into Cr2O3 enhanced the surface area of fluorinated samples. The fluorinated Cr2O3 promoted by La (La/F-Cr2O3) catalyst displayed the best activity and lifetime among the prepared catalysts, which can be attributed to its rich CrOxFy species and high surface area.

Catalytic gas-phase fluorination of 1,1,2,3-tetrachloropropene to 2-chloro-3,3,3-trifluoropropene over the fluorinated Cr2O3-based catalysts

Gas-phase fluorination of 1,1,2,3-tetrachloropropene to 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) was investigated over the fluorinated Cr2O3 catalysts with and without promoters. The reaction conditions showed significantly effects on product distribution including temperature, molar ratio of reactants and contact time. The selectivity to HCFO-1233xf was favored under relative higher temperature, larger HF/1,1,2,3-tetrachloropropene ratio and shorter contact time. Based on the data of product distribution over the fluorinated Cr2O3 catalyst, a possible reaction path involving complicated consecutive steps was proposed including the addition/elimination and the direct Cl/F exchange. The XRD, XPS and Raman results indicated that introducing Mg, Ca and La onto Cr2O3 promoted the formation of highly dispersed CrOxFy species during the pre-fluorination process, whereas the presence of Y inhibited the formation of CrOxFy. The BET results showed that the addition of La and Y into Cr2O3 enhanced the surface area of fluorinated samples. The fluorinated Cr2O3 promoted by La (La/F-Cr2O3) catalyst displayed the best activity and lifetime among the prepared catalysts, which can be attributed to its rich CrOxFy species and high surface area.

PROCESS FOR PREPARING CHLORINE-CONTAINING FLUOROCARBON COMPOUND

The present invention provides a process for preparing at least one chlorine-containing fluorocarbon compound selected from the group consisting of chlorine-containing fluoropropane compounds represented by Formula (1): CFnCl3-nCHClCH2—Cl, wherein n is 1 or 2, and chlorine-containing fluoropropene compounds represented by Formula (2): CFnCl3-nCCl═CH2, wherein n is 1 or 2, wherein the process includes the step of contacting at least one chlorine-containing compound selected from the group consisting of 1,1,1,2,3-pentachloropropane, 1,1,2,3-tetrachloropropene, and 2,3,3,3-tetrachloropropene with hydrogen fluoride in the absence of a catalyst while heating. According to the present invention, the chlorine-containing propane and propene compounds having 1 or 2 fluorine atoms can be prepared by an industrially applicable, simple and effective process.

PROCESS FOR PREPARING CHLORINE-CONTAINING FLUOROCARBON COMPOUND

The present invention provides a process for preparing at least one chlorine-containing fluorocarbon compound selected from the group consisting of chlorine-containing fluoropropane compounds represented by Formula (1) : CFnCl3-nCHClCH2Cl, wherein n is 1 or 2, and chlorine-containing fluoropropene compounds represented by Formula (2) : CFnCl3-nCCl=CH2, wherein n is 1 or 2, wherein the process includes the step of contacting at least one chlorine-containing compound selected from the group consisting of 1, 1, 1, 2, 3-pentachloropropane, 1, 1, 2, 3-tetrachloropropene, and 2, 3, 3, 3-tetrachloropropene with hydrogen fluoride in the absence of a catalyst while heating. According to the present invention, the chlorine- containing propane and propene compounds having 1 or 2 fluorine atoms can be prepared by an industrially applicable, simple and effective process.

PROCESS FOR PREPARING 2-CHLORO-3,3,3-TRIFLUOROPROPENE

The present invention provides a process for preparing 2-chloro-3,3,3-trifluoropropene including subjecting, in the absence of a catalyst, at least one chlorine-containing compound selected from the group consisting of chloropropane represented by formula (1): CClX2CHClCH2Cl, wherein each X is the same or different and each represents Cl or F, chloropropene represented by formula (2): CClY2CCl=CH2, wherein each Y is the same or different and each represents Cl or F, and chloropropene represented by formula (3): CZ2=CClCH2Cl, wherein each Z is the same or different and each represents Cl or F, to a reaction with hydrogen fluoride under heating in a gas phase. According to the present invention, 2-chloro-3,3,3-trifluoropropene (HCFC-1233xf) can be effectively prepared by an easy and economically advantageous process that is suitable for industrial scale production.

HYDROFLUORINATION OF 2-CHLORO-3,3,3-TRIFLUOROPROPENE TO 2-CHLORO-1,1,1,2-TETRAFLUOROPROPANE WITH CATALYSTS OF SBCL3, SBCL5, SBF5, TICL4, SNCL4, CR2O3 AND FLUORINATED CR2O3

A process for making 2-chloro-1,1,1,2-tetrafluoropropane comprising hydrofluorinating 2-chloro-3,3,3-trifluoropropene in the presence of a catalyst selected from the group consisting of: SbCl3, SbCl5, SbF5, TiCl4, SnCl4, Cr2O3, and fluorinated Cr2O3.