Copper(II) trifluoromethanesulfonate

• Catalog No.: B20253
• CAS Number: 34946-82-2
• M. F.: C2CuF6O6S2
• M. W.: 361.6842192
• Purity: 98%

SYNONYMS

• Title: 三氟甲烷磺酸铜(II)
• IUPAC name: copper(2+) ion ditrifluoromethanesulfonate
• IUPAC Traditional name: copper(2+) ion ditriflate
• Synonyms: Copper(II) triflate; Trifluoromethanesulfonic acid copper(II) salt

DATABASE IDS

• EC Number: 252-300-8
• MDL Number: MFCD00077492
• CAS Number: 34946-82-2
• Beilstein Number: 4028198

PROPERTIES

• Purity: 98%
• Melting Point: dec.
• GHS Hazard statements: H314-H318
• European Hazard Symbols: Corrosive (C)
• GHS Precautionary statements: P260-P303+P361+P353-P305+P351+P338-P301+P330+P331-P405-P501A
• Risk Statements: 34
• Safety Statements: 20-26-36/37/39-45-60
• Storage Warning: Hygroscopic
• TSCA Listed: 否
• Hazard Class: 8
• UN Number: UN3261
• Packing Group: III

REFERENCES

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