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B20253
Copper(II) trifluoromethanesulfonate, 98%

CAS: 34946-82-2 MDL: MFCD00077492  EINECS: 252-300-8
UN#:UN3261Hazard Class:8Packing Group:III
Alternate Name: Copper(II) triflate
Trifluoromethanesulfonic acid copper(II) salt

 

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Chemical Properties

Formula: Cu(CF3SO3)2  Melting point: dec.
Formula weight: 361.68  Sensitivity: Hygroscopic

Literature References

Mild Lewis acid:

Used catalytically, promotes dehydration of alcohols and diols to alkenes at ambient temperatures: Helv. Chim. Acta, 70, 607 (1987).

Widely used to generate carbenoid species from ɑ-diazo esters and ketones, via in situ reduction to the Cu(I) species: J. Am. Chem. Soc., 95, 3300 (1973). Preferred reagent for intramolecular cyclization of various diazo ketones: J. Org. Chem., 49, 11496 (1984). Also promotes the reaction between diazo esters and imines to give aziridines: J. Chem. Soc., Chem. Commun., 1 (1995).

Catalyzes syn-selective aldol condensation of (Z)-silyl enol ethers with aldehydes: Chem. Lett., 959 (1997).

Friedel-Crafts alkylation and acylation reactions of aromatics are also catalyzed: Tetrahedron, 57, 241 (2001).

For a brief feature on uses of the reagent in synthesis, see: Synlett, 1044 (2005).


Other References

Beilstein: 4028198
UN#: UN3261
Harmonized Tariff Code:   2904.90

GHS Hazard and Precautionary Statements

Hazard Statements : H314-H318

Causes severe skin burns and eye damage. Causes serious eye damage.

Precautionary Statements : P260-P303+P361+P353-P305+P351+P338-P301+P330+P331-P405-P501A

Do not breathe dust/fume/gas/mist/vapours/spray. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Corrosive

Risk & Safety

Risk Phrases: 34
Causes burns.
Safety Phrases: 20-26-36/37/39-45-60
When using do not eat or drink. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Wear suitable protective clothing, gloves and eye/face protection. In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible). This material and/or its container must be disposed of as hazardous waste.
Corrosive
TSCA: No