(Z)-1,2-Difluoroethylene

Base Information

• Chemical Name: (Z)-1,2-Difluoroethylene
• CAS No.: 1630-77-9
• Molecular Formula: C2H2 F2
• Molecular Weight: 64.0347
• Hs Code.: 2903780090
• European Community (EC) Number: 216-628-5
• DSSTox Substance ID: DTXSID001313123
• Nikkaji Number: J182.052D
• Mol file: 1630-77-9.mol

Synonyms:1,2-difluoroethylene;1,2-fluoroethene

Chemical Property of (Z)-1,2-Difluoroethylene

Chemical Property:

• Vapor Pressure: 5880mmHg at 25°C
• Melting Point: -165.25°C
• Refractive Index: 1.3326 (estimate)
• Boiling Point: 47-48°C
• PSA: 0.00000
• Density: 0.969g/cm³
• LogP: 1.39660
• XLogP3: 0.7
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 2
• Rotatable Bond Count: 0
• Exact Mass: 64.01245639
• Heavy Atom Count: 4
• Complexity: 19.2

Purity/Quality:

99% ^*data from raw suppliers

cis-1,2-Difluoroethylene 95% ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Chemical Classes: Other Classes -> Halogenated Aliphatics, Unsaturated
• Canonical SMILES: C(=CF)F
• Isomeric SMILES: C(=C\F)\F

Technology Process of (Z)-1,2-Difluoroethylene

There total 23 articles about (Z)-1,2-Difluoroethylene which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 72.0%

difluoromethyl copper + ethyl chloromethyl ether (3188-13-4) → 2,2-difluoroethyl ethyl ether (372-55-4) + 1,1,2,2-tetrafluoroethane (359-35-3) + (Z)-1,2-difluoro-ethene (1630-77-9)

Guidance literature:

In N,N-dimethyl-formamide; at 20 ℃; for 5h;

DOI:10.1016/j.jfluchem.2007.05.015

Reference yield: 69.9%

1,1,2-trifluoroethylene (359-11-5) → (Z)-1,2-difluoro-ethene (1630-77-9) + (E)-1,2-difluoroethene (1630-78-0)

Guidance literature:

With lithium aluminium tetrahydride; tris(cyclopentadienyl)neodymium(III); In toluene; at 80 ℃; for 67h; Reagent/catalyst; Catalytic behavior; Schlenk technique; Inert atmosphere;

DOI:10.1002/zaac.201800044

Reference yield: 46.0%

cis-2,3-difluoro-5,6-bis(trifluoromethyl)-2,3-dihydro-p-dioxin (76293-22-6) → Hexafluoroethane (76-16-4) + (Z)-1,2-difluoro-ethene (1630-77-9) + (E)-1,2-difluoroethene (1630-78-0) + 1,1,1,4,4,4-hexafluoro-2,3-butanedione (685-24-5)

Guidance literature:

at 610 ℃; Product distribution; various reaction conditions;

upstream raw materials:

1,2-difluoro-1,2-dichloroethene

1,1,1-trifluoro-2-propanone

(E)-1,2-difluoroethene

cis-2,2-bis(trifluoromethyl)-3,4-difluorooxetane

Downstream raw materials:

1,1,1,2,2,3,4-heptafluorobutane

r-2-pentafluoroethyl-t-3,t-4-difluoro-oxetan

r-2-pentafluoroethyl-t-3,c-4-difluoro-oxetan

r-2-pentafluoroethyl-c-3,t-4-difluoro-oxetan

Refernces

• 1、 Demiel,A.. "". . p. 3500 - 3504. Retrieved 1962.
• 2、 Flynn et al.. "". . p. 2295. Retrieved 1963.
• 3、 Sirkin, Eric R.,Pimentel, George C.. "Vacuum Ultraviolet Photochemistry of Fluoroethene and 1,1-Difluoroethene". . p. 1833 - 1840. Retrieved 1984.
• 4、 Jaeger, Alma D.,Ehm, Christian,Lentz, Dieter. "Organocatalytic C?F Bond Activation with Alanes". supporting information. p. 6769 - 6777. Retrieved 2018/04/02.