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inquiryDifluoromethaneAppearance:gas Application:Refrigerant, as substitute for R-502, or used respectively with HFC-134a,HFC-152a to form mixed refrigerants in replace of HCFC-22. Dry etching agent. Transportation:By express (Door to door) such as FEDEX,
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inquiryDifluoromethane Basic information Product Name: Difluoromethane Synonyms: 1,1-Difluoromethane;Carbon fluoride hydride (CF2H2);carbonfluoridehydride;CH2F2;Difluo
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1,1,1,2-tetrafluoroethane
A
1,1,1,2,2-pentafluoroethane
B
Difluoromethane
C
trifluoromethan
D
Hexafluoroethane
Conditions | Yield |
---|---|
With fluorine at 200 - 250℃; Product distribution; Further Variations:; Reagents; | A 1.1% B 0.9% C 0.4% D 97.6% |
dichloromethane
A
methylene chloride
B
Difluoromethane
C
R32
D
trifluoromethan
Conditions | Yield |
---|---|
With hydrogen fluoride; antimony(III) fluoride; antimony pentafluoride at 5 - 100℃; under 12504.7 Torr; | A n/a B 96.9% C 3.08% D n/a |
antimony pentafluoride | A n/a B 96.4% C 3.56% D n/a |
Conditions | Yield |
---|---|
With ammonium persulfate; ammonium formate In N,N-dimethyl-formamide at 30 - 40℃; | 90% |
dichloromethane
ammonia
A
hydrogen cyanide
B
Difluoromethane
C
Chlorodifluoromethane
D
carbon dioxide
E
carbon monoxide
Conditions | Yield |
---|---|
nickel titanate In neat (no solvent) steady-state flow reaction over NiTO3*6H2O catalyst at 773 K, further by-product is CFH3 (yield 0.3 %); | A 81.8% B 0.1% C 0.6% D 10.4% E 6.8% |
nickel titanate In neat (no solvent) steady-state flow reaction over NiTO3*6H2O catalyst at 823 K, further by-product is CFH3 (yield 0.4 %); | A 66.2% B 0.2% C 1.4% D 12.9% E 18.8% |
With catalyst: Pt/C In neat (no solvent) steady-state flow reaction over Pt/C catalyst at 821 K, a further by-product is CFH3 (yield 0.2 %); | A 64.6% B 0.3% C 0.2% D 0.6% E 0.8% |
Conditions | Yield |
---|---|
Stage #1: With hydrogen fluoride; chromia-alumina catalyst at 100 - 400℃; for 24h; Stage #2: dichloromethane With hydrogen fluoride at 250 - 275℃; Conversion of starting material; | A 79.6% B 7.79% |
With (PPh3)2Pd(Ph)F; bis(triphenylphosphine)iminium chloride for 0.583333h; | |
With (PPh3)2Pd(Ph)F; bis(triphenylphosphine)iminium chloride for 0.583333h; Product distribution; other time; |
Conditions | Yield |
---|---|
With dibromobis(triphenylphosphine)nickel(II); potassium carbonate In tetrahydrofuran at 80℃; for 17h; Schlenk technique; Inert atmosphere; Sealed tube; | A 63% B 16% |
Conditions | Yield |
---|---|
With triphenylphosphine In N,N-dimethyl-formamide at 130℃; | 60% |
dichloromethane
ammonia
A
hydrogen cyanide
B
Methyl fluoride
C
Difluoromethane
D
Chlorodifluoromethane
E
carbon dioxide
Conditions | Yield |
---|---|
With catalyst: Pt/C In neat (no solvent) steady-state flow reaction over Pt/C catalyst at 769 K; | A 53.4% B 0.3% C 0.5% D 7.6% E 0.5% |
Conditions | Yield |
---|---|
With potassium fluoride In ethylene glycol at 140 - 150℃; for 5h; | A n/a B 33% |
Dichlorofluoromethane
Triethylgerman
A
Difluoromethane
B
dichloromethane
C
trifluoromethan
D
Chlorodifluoromethane
E
triethylchlorogermane
Conditions | Yield |
---|---|
With ACF. Et3GeH at 25℃; for 72h; Schlenk technique; Inert atmosphere; | A n/a B n/a C 22% D 16% E n/a |
hypofluorous acid trifluoromethyl ester
methane
A
carbon tetrafluoride
B
Difluoromethane
C
trifluoromethan
Conditions | Yield |
---|---|
im UV-Licht; |
Conditions | Yield |
---|---|
With mercury(I) fluoride; iodine |
methane
Difluoromethane
Conditions | Yield |
---|---|
With nitrogen; copper; fluorine |
Conditions | Yield |
---|---|
With antimony(III) fluoride | |
With hydrogen fluoride; antimonypentachloride at 120 - 140℃; | |
With antimonypentachloride; antimony(III) fluoride at 120 - 140℃; |
Conditions | Yield |
---|---|
With ammonium chloride; water; zinc | |
under 0.8 - 15.001 Torr; Mechanism; Irradiation; | |
With hydrogen; silica gel; gold; palladium at 180℃; |
1,1,1,2,2-pentafluoroethane
A
polytetrafluoroethylene
B
Difluoromethane
C
trifluoromethan
D
1,1,2,2-tetrafluoroethane
E
Hexafluoroethane
F
1,1,2-trifluoroethylene
Conditions | Yield |
---|---|
Product distribution; Irradiation; variation of laser pulse energy; |
dichloromethane
A
Difluoromethane
B
R32
C
Chlorodifluoromethane
D
Dichlorofluoromethane
E
Dichlorodifluoromethane
F
trichlorofluoromethane
Conditions | Yield |
---|---|
With xenon difluoride for 48h; Ambient temperature; other halogenocarbons; var. reaction time; |
Dichlorodifluoromethane
A
hydrogen cyanide
B
Methyl fluoride
C
Difluoromethane
D
Chlorodifluoromethane
E
carbon dioxide
F
carbon monoxide
Conditions | Yield |
---|---|
With O3Ti(2-)*Ni(2+); ammonia at 499.9℃; Product distribution; other catalysts; |
halon-1211
A
bromodifluoromethane
B
Difluoromethane
C
bromofluoromethane
D
dichloromethane
E
Chlorodifluoromethane
F
1,2-dibromomethane
Conditions | Yield |
---|---|
With hydrogen In gas at 400 - 900℃; under 760 Torr; Rate constant; Product distribution; Mechanism; other reagents; Ea; |
Conditions | Yield |
---|---|
With potassium hydroxide Product distribution; other reagent - KOH powder; | |
With water by NMR; | |
With H2O by NMR; |
perfluoro-2-phosphapropene
A
Difluoromethane
B
trifluoromethan
C
Difluormethyl-phosphonigsaeure-dimethylester
D
Difluormethyl-trifluormethyl-phosphinigsaeure-methylester
E
phosphorous acid trimethyl ester
Conditions | Yield |
---|---|
With methanol; sodium methylate Product distribution; further reagents: EtOH/NaOEt, MeOH/NaOEt (80:20), EtOH/NaOMe (70:30); |
(difluoromethyl)silane
A
Difluoromethane
B
methyl fluorosilane
C
methyldifluorosilane
D
methyltrifluorosilane
Conditions | Yield |
---|---|
at 210 - 220℃; for 7h; Title compound not separated from byproducts; | A 1 % Spectr. B 8 % Spectr. C 43 % Spectr. D 6 % Spectr. |
acetyl hypofluorite
A
ethane
B
Methyl fluoride
C
Difluoromethane
D
methyl fluoroformate
E
carbon dioxide
Conditions | Yield |
---|---|
Product distribution; decomposition in diff. vessels; with/without oxygen; |
A
carbon tetrafluoride
B
methane
C
ethane
D
Difluoromethane
E
trifluoromethan
Conditions | Yield |
---|---|
at 230.9℃; Rate constant; Kinetics; thermal decomposition; in the presence of oxygen; var. temperatures; |
A
polytetrafluoroethylene
B
carbon tetrafluoride
C
Difluoromethane
D
trifluoromethan
E
Hexafluoroethane
Conditions | Yield |
---|---|
at 230.9℃; Rate constant; Kinetics; thermal decomposition; in the presence of oxygen; var. temperatures; |
Conditions | Yield |
---|---|
With NF4(1+)*AsF6(1-); hydrogen fluoride under 25857.4 Torr; for 4h; Product distribution; Mechanism; Ambient temperature; other fluorination agents; var. reagents ratio; |
bis(trifluoromethyl)phosphine
A
Difluoromethane
B
trifluoromethan
C
perfluoro-2-phosphapropene
Conditions | Yield |
---|---|
With potassium hydroxide at -196 - 25℃; Title compound not separated from byproducts; |
iodotrifluoromethane
A
difluoro-methylene
B
trifluoromethyl radical
C
Difluoromethane
Conditions | Yield |
---|---|
With Ni(100) surface under 2E-10 Torr; temperature and coverage dependence investigated; |
methane
A
carbon tetrafluoride
B
Methyl fluoride
C
Difluoromethane
D
trifluoromethan
Conditions | Yield |
---|---|
With cobalt (III) fluoride at 95 - 325℃; Product distribution; Mechanism; in the presence 95percent helium; |
Conditions | Yield |
---|---|
With cobalt (III) fluoride at 95 - 325℃; Rate constant; Thermodynamic data; in the presence 95percent helium; E; |
18-crown-6 ether
Difluoromethane
benzyl potassium
hexamethylborazine
Conditions | Yield |
---|---|
Stage #1: 18-crown-6 ether; benzyl potassium; hexamethylborazine In tetrahydrofuran at 0℃; for 0.166667h; Stage #2: Difluoromethane In tetrahydrofuran at 20℃; for 0.25h; | 95% |
Conditions | Yield |
---|---|
With antimony pentafluoride at 50 - 80℃; for 28h; | 92% |
catalyst of example 4 (prepared from AlCl3 and CFCl3) at 65 - 70℃; for 12h; Product distribution / selectivity; |
perfluoropropylene
Difluoromethane
2-Trifluoromethyl-1,1,1,2,3-pentafluoropropane
Conditions | Yield |
---|---|
With antimony pentafluoride at 50℃; for 16h; | 90% |
Conditions | Yield |
---|---|
at 280℃; for 96h; | 85% |
18-crown-6 ether
Difluoromethane
potassium diisopropyl amide
octahydro-[1,2]azaborinino[1,2-a][1,2]azaborinine
Conditions | Yield |
---|---|
Stage #1: potassium diisopropyl amide; octahydro-[1,2]azaborinino[1,2-a][1,2]azaborinine In tetrahydrofuran at -80℃; for 0.0166667h; Stage #2: Difluoromethane In tetrahydrofuran for 0.166667h; Sealed tube; Stage #3: 18-crown-6 ether In tetrahydrofuran at 20℃; for 0.25h; Sealed tube; | 78% |
Stage #1: potassium diisopropyl amide; octahydro-[1,2]azaborinino[1,2-a][1,2]azaborinine In tetrahydrofuran at -80℃; for 0.0166667h; Stage #2: Difluoromethane In tetrahydrofuran for 0.166667h; Sealed tube; Stage #3: 18-crown-6 ether In tetrahydrofuran; pentane at 20℃; for 0.5h; | 78% |
18-crown-6 ether
Difluoromethane
1,2,3,4-tetrahydro-[1,2]azaborinino[1,2-a][1,2]azaborinine
benzyl potassium
Conditions | Yield |
---|---|
Stage #1: 18-crown-6 ether; 1,2,3,4-tetrahydro-[1,2]azaborinino[1,2-a][1,2]azaborinine; benzyl potassium In tetrahydrofuran at 0℃; for 0.166667h; Stage #2: Difluoromethane In tetrahydrofuran at 20℃; for 0.5h; | 62% |
Difluoromethane
p-trifluoromethylphenyl bromide
1-(difluoromethyl)-4-(trifluoromethyl)benzene
Conditions | Yield |
---|---|
With 2,6-dimethylpyridine; tris-(trimethylsilyl)silane; [4,4’-bis(1,1-dimethylethyl)-2,2’-bipyridine-N1,N1‘]bis [3,5-difluoro-2-[5-(trifluoromethyl)-2-pyridinyl-N]phenyl-C]iridium(III) hexafluorophosphate In 1,2-dimethoxyethane at 30℃; for 18h; Inert atmosphere; Irradiation; | 50% |
Difluoromethane
1,2-dichloro-1,2-difluoroethene
1,3-dichloro-1,1,2,2,3-pentafluoropropane
Conditions | Yield |
---|---|
With antimony pentafluoride at 20℃; for 2h; | 36% |
18-crown-6 ether
Difluoromethane
benzyl potassium
octahydro-[1,2]azaborinino[1,2-a][1,2]azaborinine
Conditions | Yield |
---|---|
Stage #1: 18-crown-6 ether; benzyl potassium; octahydro-[1,2]azaborinino[1,2-a][1,2]azaborinine In tetrahydrofuran at 0℃; for 0.25h; Stage #2: Difluoromethane In tetrahydrofuran for 0.166667h; Sealed tube; | 34% |
Stage #1: 18-crown-6 ether; benzyl potassium; octahydro-[1,2]azaborinino[1,2-a][1,2]azaborinine In tetrahydrofuran at 0℃; for 0.25h; Stage #2: Difluoromethane In pentane at 20℃; for 0.416667h; Sealed tube; | 34% |
Conditions | Yield |
---|---|
With bromine at 500 - 600℃; | |
With bromine; chlorine at 250 - 350℃; |
Conditions | Yield |
---|---|
With chlorine |
Conditions | Yield |
---|---|
With chlorine at 350℃; |
Conditions | Yield |
---|---|
With bromine; chlorine at 350℃; | |
With bromine at 500℃; | |
With bromine; chlorine at 400 - 500℃; |
Difluoromethane
3,3-Difluoro-2-methyl-2-{[1-phenyl-meth-(E)-ylidene]-amino}-propionic acid methyl ester
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