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ChemicalBook--->CAS DataBase List--->1885-46-7

1885-46-7

1885-46-7 Structure

1885-46-7 Structure
IdentificationBack Directory
[Name]

Trifluoromethanesulfonic acid difluoromethyl ester
[CAS]

1885-46-7
[Synonyms]

Difluoromethyl triflate
Difluoromethyl triflate 95%
Difluoromethyl trifluoromethanesulfonate
Difluoromethyl trifluoromethanesulfonate 95%
Trifluoromethanesulfonic acid difluoromethyl ester
Methanesulfonic acid, 1,1,1-trifluoro-, difluoromethyl ester
[Molecular Formula]

C2HF5O3S
[MDL Number]

MFCD28054469
[MOL File]

1885-46-7.mol
[Molecular Weight]

200.08
Chemical PropertiesBack Directory
[Boiling point ]

48.5-49 °C
[density ]

1.584 g/mL at 25 °C
[Fp ]

57℃
[storage temp. ]

2-8°C
[form ]

liquid
[color ]

Clear, colourless
Safety DataBack Directory
[Hazard Codes ]

C,Xn
[Risk Statements ]

22-34
[Safety Statements ]

26-36/37/39-45
[RIDADR ]

UN 2920 3(8) / PGII
[WGK Germany ]

3
[HS Code ]

2905190098
Hazard InformationBack Directory
[Uses]

Difluoromethyl triflate (TfO-CHF2) can be used as a reagent:
  • In difluoromethylation reaction.
  • To prepare difluoromethoxylated heterocycles by reacting with hydroxylated N-based heterocycles.
  • To synthesize trifluoromethylated arenes by treating with diaryliodonium salts in the presence of copper and tetrabutylammonium difluorotriphenylsilicate (TBAT).

It allows for a simple method toward the preparation of difluoromethyl ethers and thioethers under basic conditions from alcohols and thiols. Difluoromethyl phenols can also be obtained in a single pot from boronic acids and C-H activation of arenes.
[General Description]

Difluoromethyl triflate (HCF2OTf) is an easy to handle, air-stable and non-ozone-depleting liquid reagent for difluoromethylation. It can be prepared by reacting trifluoromethyltrimethylsilane (TMSCF3) and triflic acid in the presence of titanium tetrachloride (TiCl4).
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