This site requires that javascript be enabled. Please configure your browser in the tools or configuration section.
B20253 34946-82-2 Copper(II) trifluoromethanesulfonate, 98% Copper(II) triflate Trifluoromethanesulfonic acid copper(II) salt Alfa Aesar


Certificate of Analysis

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


Pricing and Availability

Size ($) Price Your Price Quantity Options Availability
5g 66.60 Check Availability Add to Favorites Enter qty and click checkbox
25g 209.00 Check Availability Add to Favorites Enter qty and click checkbox
100g 696.00 Check Availability Add to Favorites Enter qty and click checkbox

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.


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.