Dibromodifluoromethane

Base Information

• Chemical Name: Dibromodifluoromethane
• CAS No.: 75-61-6
• Molecular Formula: CBr2F2
• Molecular Weight: 209.816
• Hs Code.: 29034700
• European Community (EC) Number: 200-885-5
• ICSC Number: 1419
• UN Number: 1941
• UNII: 82022727JD
• DSSTox Substance ID: DTXSID9058789
• Nikkaji Number: J10.975D
• Wikipedia: Dibromodifluoromethane
• Wikidata: Q905027
• ChEMBL ID: CHEMBL499553
• Mol file: 75-61-6.mol

Synonyms:DIBROMODIFLUOROMETHANE;75-61-6;Difluorodibromomethane;dibromo(difluoro)methane;Halon 1202;Methane, dibromodifluoro-;Freon 12-B2;Fluorocarbon 12-B2;CF2Br2;UN1941;HSDB 1335;CBr2F2;EINECS 200-885-5;R 12B2;BRN 1732515;UNII-82022727JD;82022727JD;4-01-00-00080 (Beilstein Handbook Reference);Carbon dibromide difluoride;Dibromdifluormetan;Dibromodifluoromethane(FC-12B2);Difluorodibromometano;diflourodibromomethane;dibromo difluoromethane;Difluorodibromomethane.;dibromo-difluoro-methane;Metano, dibromodifluoro-;C-Br2-F2;SCHEMBL102197;Dibromodifluoromethane, R12B2;CHEMBL499553;DTXSID9058789;AZSZCFSOHXEJQE-UHFFFAOYSA-;AMY6844;bis(bromanyl)-bis(fluoranyl)methane;DIFLUORODIBROMOMETHANE [HSDB];MFCD00000367;NA1941;AKOS005063439;UN 1941;Dibromodifluoromethane, >=95.0% (GC);CARBON BROMIDE FLUORIDE (CBR2F2);LS-90024;A838465;Q905027;J-520235;Dibromodifluoromethane, R12B2 [UN1941] [Class 9];Dibromodifluoromethane, R12B2 [UN1941] [Class 9];F1905-7209

Chemical Property of Dibromodifluoromethane

Chemical Property:

• Appearance/Colour: clear colorless to pale yellow liquid
• Vapor Pressure: 724mmHg at 25°C
• Melting Point: -141 °C
• Refractive Index: 1.398-1.402
• Boiling Point: 26.4 °C at 760 mmHg
• Flash Point: None
• PSA: 0.00000
• Density: 2.547 g/cm³
• LogP: 2.32650
• Storage Temp.: Refrigerator (+4°C)
• Solubility.: Soluble in acetone, alcohol, benzene, and ether (Weast, 1986)
• Water Solubility.: Insoluble
• XLogP3: 2.6
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 2
• Rotatable Bond Count: 0
• Exact Mass: 209.83143
• Heavy Atom Count: 5
• Complexity: 30.6
• Transport DOT Label: Class 9

Purity/Quality:

99% ^*data from raw suppliers

Dibromodifluoromethane 99% ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Xi
• Hazard Codes: Xi,N
• Statements: 36/37/38-59
• Safety Statements: 37/39-26-59

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Chemical Classes: Solvents -> Chlorofluorocarbons
• Canonical SMILES: C(F)(F)(Br)Br
• Inhalation Risk: A harmful concentration of this gas in the air will be reached very quickly on loss of containment.
• Effects of Short Term Exposure: The substance is irritating to the respiratory tract. Inhalation of high levels may cause lung oedema. The substance may cause effects on the central nervous system. Exposure could cause lowering of consciousness.
• Physical properties: Colorless liquid or gas with a characteristic odor
• Uses: Synthesis of dyes; quaternary ammonium compounds; pharmaceuticals; fire-extinguishing agent. Fire-extinguishing agent

Technology Process of Dibromodifluoromethane

There total 35 articles about Dibromodifluoromethane 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:

bromine trifluoride (7787-71-5) + carbon tetraiodide (507-25-5) → iodine pentafluoride (676353-70-1,51096-45-8,7783-66-6) + carbon tetrafluoride (75-73-0) + dibromodifluoromethane (75-61-6) + iodine (7553-56-2,12190-71-5,8031-47-8) + iodine(I) bromide (7789-33-5)

Guidance literature:

In neat (no solvent); slow addition of BrF3 to icy cold CI4, reaction with inflammation;;

DOI:10.1039/JR9480002188

Reference yield:

methane (34557-54-5,27936-85-2) + halon-1211 (353-59-3) → polytetrafluoroethylene (116-14-3,82785-14-6) + methyl bromide (74-83-9) + methylene chloride (74-87-3) + trifluoromethan (75-46-7) + Chlorodifluoromethane (75-45-6) + 1-fluoroethylene (75-02-5,24981-14-4) + Dichlorodifluoromethane (75-71-8) + dibromodifluoromethane (75-61-6) + 1,2-difluoroethene (1691-13-0)

Guidance literature:

at 499.84 - 899.84 ℃;

Reference yield:

halon-1211 (353-59-3) → methyl bromide (74-83-9) + methylene chloride (74-87-3) + methane (34557-54-5,27936-85-2) + dibromodifluoromethane (75-61-6) + pyrographite (7440-44-0)

Guidance literature:

With carbon dioxide; water; In neat (no solvent); decomposition at 400°C;;

upstream raw materials:

Difluoromethane

halon-1211

tribromofluoromethane

carbon tetrabromide

Downstream raw materials:

1-bromo-1,1-difluoro-but-2-ene

1,3-dibromo-1,1-difluoro-butane

1,1-difluoro-1,3-dibromopropane

1,3-dibromo-1,1,3-trifluoro-propane

Refernces

Unusually mild and efficient synthesis of functionalized spiro-substituted 1,2,3,4-tetrahydro-nicotinamides by the michael reaction

10.1007/s10593-011-0854-5

The research details an unusually mild and efficient synthesis of functionalized spiro-substituted 1,2,3,4-tetrahydronicotinamides through the Michael reaction. The purpose of this study was to explore the transformation of the nitrile group into an amide group under mild conditions, which is typically challenging due to the need for rigorous conditions in such transformations. The researchers successfully synthesized these compounds using cyclopentylidenecyanoacetamide and cyclohexylidenecyanoacetamide as reactants with acetoacetanilide or ethyl acetoacetate, yielding the desired tetrahydronicotinamides in good yields. The study concluded with the successful synthesis of these compounds, and further investigation into the mechanism of the transformation, the scope of the reaction, and the chemical and biological properties of the products is ongoing. The chemicals used in the process include cyclopentylidenecyanoacetamide (1a), cyclohexylidenecyanoacetamide (1b), acetoacetanilide (2a), and ethyl acetoacetate (2b).

Facile Synthesis of Ethyl 3,3-Difluoroacrylate from Dibromodifluoromethane and Diels-Alder Cycloaddition with Furan

10.1021/jo00378a028

The research focuses on the synthesis of ethyl 3,3-difluoroacrylate (6) and its subsequent Diels-Alder reaction with furan to produce difluorocyclohexadienol derivatives. The purpose of this study was to develop an efficient method for synthesizing ethyl 3,3-difluoroacrylate, a compound of interest for its potential to introduce fluorine atoms into organic molecules, and to explore its reactivity in the Diels-Alder reaction. The researchers successfully developed a synthesis route with an overall yield of 36%, starting from ethyl vinyl ether and dibromodifluoromethane. Key chemicals used in the process include ethyl vinyl ether, dibromodifluoromethane, ethanol, Caro's acid, m-chloroperoxybenzoic acid, and triethylamine. The study concluded that ethyl 3,3-difluoroacrylate is more reactive than methyl acrylate and that the Diels-Alder reaction with furan, although accompanied by decomposition, yielded a mixture of epimers, demonstrating the potential of this approach for synthesizing complex molecules with fluorine substitution.

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