407-70-5

Basic information

• Product Name: CF2CHCHCF2
• Synonyms: CF2CHCHCF2
• CAS NO: 407-70-5
• Molecular Formula: C₄H₂F₄
• Molecular Weight: 126.0522928
• Mol File: 407-70-5.mol
• Article Data: 7

Chemical Properties

• Boiling Point: 5.61°C (rough estimate)
• Appearance: /
• Density: 1.221g/cm³
• Vapor Pressure: 3330mmHg at 25°C
• Refractive Index: 1.329
• CAS DataBase Reference: CF2CHCHCF2(CAS DataBase Reference)
• NIST Chemistry Reference: CF2CHCHCF2(407-70-5)
• EPA Substance Registry System: CF2CHCHCF2(407-70-5)

Safety Data

• Hazardous Substances Data: 407-70-5(Hazardous Substances Data)

Usage

InChI:InChI=1/C4H2F4/c5-3(6)1-2-4(7)8/h1-2H

Upstream product

• 2925-16-8 1,1-difluoro-2-iodoethylene 
• 116-14-3 polytetrafluoroethylene 
• 74-86-2 acetylene 
• 1005-73-8 (Z)-3,3,4,4,5,5-hexafluorocyclopent-1-ene 
• 692-49-9 1,1,1,4,4,4-hexafluoro-2(Z)-butene 
• 325465-25-6 (2,4-bis(2,6-diisopropylphenylimino)pentan-3-ide-.kappa2N,N')aluminum(I) 
• 197312-67-7 C₂HF₂IZn 
• 356-85-4 3-acetoxy-1,1,2,2-tetrafluoro-cyclobutane 
• 2714-38-7 3,3,4,4-tetrafluorocyclobutene 
• 1542-25-2 1,1,4,4-tetrafluoro-4-iodo-but-1-ene 

Downstream Products

• 779-94-2 Phenyl-<1,1,4,4-tetrafluor-buten-(3)-yl>-sulfid 
• 653-06-5 3,3,4,4-Tetrafluor-1,2-bis-(2,2-difluor-vinyl)-cyclobutan 
• 1548-50-1 3,3,5,5,6,6-Hexafluor-4-<2-(2,2-difluor-vinyl)-3,3,4,4-tetrafluor-cyclobutyl>-cyclohexen 

Relevant articles and documents

THE THERMAL DEAZETATION OF 6,6,7,7-TETRAFLUORO-2,3-DIAZABICYCLOHEPT-2-ENE

The mechanisms of formation of five products from the deazetation of the title compound and a remarkable thermodynamic methyl substituent effect are presented and discussed.

METHOD OF PRODUCING COMPOUND HAVING BUTADIENE SKELETON CONTAINING HYDROGEN AND FLUORINE AND/OR CHLORINE

An object of the present invention is to provide a simple, low-cost, and industrial method of producing a compound having a polyene skeleton containing hydrogen and fluorine and/or chlorine. A method of producing a halogenated diene represented by formula (1): A1A2C═CA3-CA4═CA5A6[A1, A2, A5, and A6 are each independently hydrogen, fluorine, chlorine, a (perfluoro)alkyl group having 1 to 3 carbon atoms, or a (perfluoro)alkenyl group; A3 and A4 are each independently hydrogen, fluorine, or chlorine; at least one of A1 to A6 is hydrogen; at least one of A1 to A6 is fluorine or chlorine] comprises a step of subjecting the same or different halogenated olefin(s) represented by formula (2): A7A8C═CA9X[A7 and A8 are each independently hydrogen, fluorine, chlorine, a (perfluoro)alkyl group having 1 to 3 carbon atoms, or a (perfluoro)alkenyl group; A9 is each independently hydrogen, fluorine, or chlorine; X is bromine or iodine] to a coupling reaction in the presence of a zero-valent metal and a metal salt.

METHOD OF PRODUCING COMPOUND HAVING BUTADIENE SKELETON CONTAINING HYDROGEN AND FLUORINE AND/OR CHLORINE

An object of the present invention is to provide a simple, low-cost, and industrial method of producing a compound having a polyene skeleton containing hydrogen and fluorine and/or chlorine. A method of producing a. halogenated diene represented by formula (1): A1A2C=CA3-CA4=CA5A6 [A1, A2, A5, and A6 are each independently hydrogen, fluorine, chlorine, a (perfluoro)alkyl group having 1 to 3 carbon atoms, or a (perfluoro)alkenyl group; A3 and A4 are each independently hydrogen, fluorine, or chlorine; at least one of A1 to A6 is hydrogen; at least one of A1 to A6 is fluorine or chlorine] comprises a step of subjecting the same or different halogenated olefin(s) represented by for (2): A7A8C=CA9X [A7 and A8 are each independently hydrogen, fluorine, chlorine, a (perfluoro)alkyl group having 1 to 3 carbon atoms, or a (perfluoro)alkenyl group; A9 is each independently hydrogen, fluorine, or chlorine; X is bromine or iodine] to a coupling reaction in the presence of a zero-valent metal.

Fluorinated butatrienes

Major improvements in the synthesis of 1,1,4,4-tetrafluorobutatriene (1) are presented. Despite many attempts to isolate new metal complexes of 1 only an iron complex containing a ligand which is composed of a partially hydrolyzed tetrafluorobutatriene-dimer and carbon monoxide could be isolated and characterized by X-ray crystallography. Certain metal centers and solvents accelerate the decomposition of 1. First attempts to synthesize 1,1-difluorobutatriene (2) are presented which underline the major challenges of a successful synthesis of 2.