377-93-5

Basic information

• Product Name: 1,2-DICHLOROTETRAFLUOROCYCLOBUT-1-ENE
• Synonyms: 1,2-DICHLOROTETRAFLUOROCYCLO-1-ENE;1,2-DICHLOROTETRAFLUOROCYCLOBUT-1-ENE;1,2-DICHLOROTETRAFLUOROCYCLOBUTENE;1,2-DICHLOROTETRAFLUOROCYCLOBUTENE-1;1,2-DICHLORO-3,3,4,4-TETRAFLUOROCYCLOBUTENE;FC-C-1314;Cyclobutene, 1,2-dichloro-3,3,4,4-tetrafluoro-;1,2-Dichlorotetrafluorocyclobut-1-ene 97%
• CAS NO: 377-93-5
• Molecular Formula: C₄Cl₂F₄
• Molecular Weight: 194.94
• Mol File: 377-93-5.mol
• Article Data: 6

Chemical Properties

• Melting Point: -43,4°C
• Boiling Point: 67°C
• Appearance: /
• Density: 1,534 g/cm3
• Refractive Index: 1.369
• CAS DataBase Reference: 1,2-DICHLOROTETRAFLUOROCYCLOBUT-1-ENE(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2-DICHLOROTETRAFLUOROCYCLOBUT-1-ENE(377-93-5)
• EPA Substance Registry System: 1,2-DICHLOROTETRAFLUOROCYCLOBUT-1-ENE(377-93-5)

Safety Data

• Statements: 20/22-36/37/38
• Safety Statements: 23-26-36/37/39
• Hazardous Substances Data: 377-93-5(Hazardous Substances Data)

Usage

General Description

1,2-Dichlorotetrafluorocyclobut-1-ene is a type of chemical compound known as a halocarbon. Halocarbons are organic compounds that contain at least one halogen (fluorine, chlorine, bromine, iodine) atom and one carbon atom. In the case of 1,2-Dichlorotetrafluorocyclobut-1-ene, it contains both chlorine and fluorine atoms. 1,2-DICHLOROTETRAFLUOROCYCLOBUT-1-ENE will usually take the form of a colorless gas or liquid at room temperature. As with many halocarbons, it is used primarily in the production of other chemicals. It can be formed via various chemical reactions. Like all chemicals, 1,2-Dichlorotetrafluorocyclobut-1-ene has specific physical and chemical properties, including its boiling point, melting point, and density, and is typically stored in a cool, dry place away from heat or open flame to maintain its stability.

InChI:InChI=1/C4Cl2F4/c5-1-2(6)4(9,10)3(1,7)8

Upstream product

• 363-56-4 2,3-dichlorotetrafluoro-1,3-butadiene 
• 336-50-5 1,1,2,2-tetrachloro-3,3,4,4-tetrafluorocyclobutane 
• 557-98-2 2-chloropropene 
• 79-35-6 1,1'-dichloro-2,2'-difluoroethene 
• 87-68-3 Hexachlorobutadiene 

Downstream Products

• 432-95-1 (2-chloro-3,3,4,4-tetrafluoro-cyclobut-1-enyl)-propyl ether 
• 377-38-8 tetrafluorosuccinic acid 
• 336-50-5 1,1,2,2-tetrachloro-3,3,4,4-tetrafluorocyclobutane 
• 359-97-7 (2-chloro-3,3,4,4-tetrafluoro-cyclobut-1-enyl)-methyl ether 
• 360-13-4 ethyl-(2-chloro-3,3,4,4-tetrafluoro-cyclobut-1-enyl)-ether 
• 18448-27-6 Propargyl-<2-chlor-tetrafluor-cyclobuten-(1)-yl-(1)>-aether 
• 17447-51-7 2,2-Difluor-4-triphenylphosphoranyliden-cyclobutandion-(1,3) 
• 4545-92-0 3,3,4,4-Tetrafluor-cyclobut-1-en-1,2-diphosphonsaeure-1,2-tetraaethyl-ester 
• 159384-15-3 2-[3,3,4,4-Tetrafluoro-2-(2-hydroxy-ethylsulfanyl)-cyclobut-1-enylsulfanyl]-ethanol 
• 13888-96-5 1,2-Bis-dimethylphosphino-3,3,4,4-tetrafluor-cyclobuten 
• 24512-32-1 1-lithium-2-chloro-3,3,4,4-tetrafluorocyclobutene 
• 994-31-0 chlorotriethylstannane 
• 699-46-7 3,4-dichloro-2,2,5,5-tetrafluoro-2,5-dihydrothiophene 
• 2924-05-2 octafluoro-2,7-dithiatricyclo<6.2.0.0^3,6>deca-1(8),3(6)-diene 

Relevant articles and documents

Method for gas phase catalytic synthesis of 3,4,4-trifluorocyclobutene

The invention relates to a method for gas phase catalytic synthesis of 3,4,4-trifluorocyclobutene, and belongs to the field of organic chemical synthesis. According to the method, hexachlorobutadiene(the molecular formula is CCl2=CCl-CCl=CCl2), chlorine (the molecular formula is Cl2) and anhydrous hydrogen fluoride (the molecular formula is HF) generate 1,2,3-trichloro-3,4,4-trifluorocyclobutene(the molecular formula is Cyclo-CF2-CFCl-CCl=CCl-) in a gas phase manner under the action of a cyclofluorination catalyst; and under the action of a hydrodechlorination catalyst, the 1,2,3-trichloro-3,4,4-trifluorocyclobutene and hydrogen generate 3,4,4-trifluorocyclobutene (the molecular formula is Cyclo-CF2-CFH-CH=CH-) in a gas phase manner. According to the invention, the method has characteristics of cheap and easily-available raw materials, simple separation and purification of product and less industrial three-waste, and is suitable for industrial production.

Catalytic Gas-phase Fluorination of Hexachlorobutadiene to 1,2-Dichlorotetrafluorocyclobutene over Cr/Zn-based Catalysts

In this paper, the gas-phase fluorination of hexachlorobutadiene (HCBD) to synthesize 1,2-dichlorotetrafluorocyclobutene (DTB) was carried out over a series of Cr/M/Zn catalysts (M = Ni, Co, Cu, In, Al). The influence of prefluorination by different fluorinating agents (HF, 95%HF + 5%Cl2, 95%HF + 5%O2, CF2O, CF2Cl2) on catalytic performance of Cr/Co/Zn sample was also investigated. The addition of prompters to the Cr/Zn catalyst improved remarkably its catalytic properties. The Cr/Ni/Zn catalyst exhibited the best catalytic activity (1.318 mmol/h/g) at 390 °C and the Cr/Co/Zn catalyst showed the best DTB selectivity (42.5%) at 350 °C. Compared to that of gaseous HF, the catalytic performance of the Cr/Co/Zn catalyst after treatment by HF + O2 and CF2O increased considerably, whereas for HF + Cl2 and CF2Cl2 it showed little effect. In order to identify the different species (Cr─O, Cr─F, CrOxFy) present on catalysts’ surface and determine their exact role, these catalysts before and after the reaction were characterized by X-ray photoelectron spectroscopy. It was found that the concentration of the various species was responsible for the activity and lifetime of catalysts. Moreover, a possible reaction route is proposed based upon the product distribution. The most feasible formation pathway of DTB proceeded via the cyclization of C4Cl4F2 or C4Cl3F3 to yield c-C4Cl4F2 and c-C4Cl3F3 followed by further the Cl/F exchange.

Hexafluoropropylene-2-butyne synthesizing method

The invention discloses a hexafluoropropylene-2-butyne synthesizing method. Hexachlorobutadiene (CCl2=CCl-CCl=CCl2) is taken as the raw material to generate hexafluoropropylene-2-butyne under the action of a catalyst, the raw material hexachlorobutadiene is easy to obtain and low in cost. The gaseous-phase circulating fluorination method is adopted, the discharge level of three industrial wastes is low, the yield of products is high, and production cost is reduced greatly; the gaseous-phase circulating fluorination method is conducted at normal temperature, the traditional high-pressure telomerization process route is avoided, and risks in industrial safety production are reduced greatly; meanwhile, the method has the advantage that operation is easy and is totally suitable for industrial production.