ChemicalBook CAS DataBase List 34946-82-2

34946-82-2

Name	COPPER(II) TRIFLUOROMETHANESULFONATE
CAS	34946-82-2
EINECS(EC#)	252-300-8
Molecular Formula	C2CuF6O6S2
MDL Number	MFCD00077492
Molecular Weight	361.68
MOL File	34946-82-2.mol

Synonyms

COPPER(II) TRIFLATE COPPER(II) TRIFLUOROMETHANESULFONATE COPPER(II) TRIFLUOROMETHANESULPHONATE COPPER TRIFLATE CUPRIC TRIFLUOROMETHANESULFONATE TRIFLUOROMETHANESULFONIC ACID COPPER(II) SALT TRIFLUOROMETHANESULFONIC ACID COPPER SALT Copper (II) trifluoromethanesulfonate, (Copper triflate) COPPER(II) TRIFLUOROMETHANESULFONATE, 98 % Copper(II)trifluoromethanesulphonate,98% Copper(II)trifluoromethanesulfonate,98%(Coppertriflate) Copper(II) trifluoromethanesulphonate 98% COPPER TRIFLUOROMETHANESULFONATE coppertrifluoromethanesulfonate Trifluoromethanesulfonic acid cupric salt CUPRIC-2-TRIFLATE Copper(II) trifluoromethanesulfonate, 99% min Copper(II) triflate, Cupric trifluoromethanesulfonate, Trifluoromethanesulfonic acid copper(II) salt Bis(trifluoromethanesulfonic acid)copper(II) salt Bis(trifluoromethylsulfonyloxy) copper(II)

Chemical Properties

Appearance	white to slightly blue or light grey cryst. powder
Melting point	≥300 °C
storage temp.	Inert atmosphere,Room Temperature
solubility	Water (Slightly)
form	Powder
color	White to slightly blue or light gray
Water Solubility	Soluble in water.
Hydrolytic Sensitivity	6: forms irreversible hydrate
Sensitive	Hygroscopic
BRN	4028198
Exposure limits	ACGIH: TWA 1 mg/m3 NIOSH: IDLH 100 mg/m3; TWA 1 mg/m3
Stability:	hygroscopic
InChI	InChI=1S/2CHF3O3S.Cu/c22-1(3,4)8(5,6)7;/h2(H,5,6,7);/q;;+2/p-2
InChIKey	SBTSVTLGWRLWOD-UHFFFAOYSA-L
SMILES	S(=O)(=O)(O[Cu]OS(=O)(=O)C(F)(F)F)C(F)(F)F
CAS DataBase Reference	34946-82-2(CAS DataBase Reference)

Safety Data

Symbol(GHS)	GHS05
Signal word	Danger
Hazard statements	H318-H314
Precautionary statements	P280-P305+P351+P338-P310-P260-P264-P301+P330+P331+P310-P303+P361+P353+P310+P363-P304+P340+P310-P305+P351+P338+P310-P405-P501-P260h-P301+P330+P331-P303+P361+P353-P501a
Hazard Codes	C,Xi
Risk Statements	R34:Causes burns. less more
Safety Statements	S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice . S36/37/39:Wear suitable protective clothing, gloves and eye/face protection . S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) . S27:Take off immediately all contaminated clothing . less more
RIDADR	UN 3261 8/PG 2
WGK Germany	3
F	3-10
Hazard Note	Irritant/Hygroscopic
TSCA	No
HazardClass	8
PackingGroup	III
HS Code	29049090
Storage Class	11 - Combustible Solids

Raw materials And Preparation Products

Hazard Information

Chemical Properties

white to slightly blue or light grey cryst. powder

Uses

Copper(II) trifluoromethanesulfonate is a mild lewis acid. It is used as catalyst which promotes dehydration of alcohols and diols to alkenes at ambient temperatures. It is widely used to generate carbenoid species from ?-diazo esters and ketones, via in situ reduction to the Cu(I) species. It is also promotes the reaction between diazo esters and imines to give aziridines. It catalyzes syn-selective aldol condensation of (Z)-silyl enol ethers with aldehydes, Friedel-Crafts alkylation, acylation reactions of aromatics and addition of trimethylsilyl cyanide to carbonyl compounds.

Preparation

Copper(II) trifluoromethanesulfonate is prepared from copper(II) carbonate and triflic acid (Trifluoromethanesulfonic Acid) in MeCN.

reaction suitability

core: copper
reagent type: catalyst

Purification Methods

Dissolve it in MeCN, add dry Et2O until cloudy and cool at -20o in a freezer. The light blue precipitate is collected and dried in a vacuum oven at 130o/20mm for 8hours. It has 737nm ( 22.4 max M1cm -1) in AcOH. [Salomon & Kochi J Am Chem Soc 95 330 1973]. It has also been dried in a vessel at 0.1Torr by heating with a Fischer burner [Andrist et al. J Org Chem 43 3422 1978]. It has been dried at 110-120o/5mm for 1hour before use and forms a *benzene complex which should be handled in a dry box because it is air sensitive [Kobayashi et al. Chem Pharm Bull Jpn 28 262 1980, Salomon & Kochi J Am Chem Soc 95 330 1973]. [Beilstein 3 IV 34.]

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34946-82-2

Chemical Properties

Safety Data

Raw materials And Preparation Products

Raw materials

Hazard Information

Chemical Properties

Uses

Preparation

reaction suitability

Purification Methods

Questions And Answer

Reaction

Spectrum Detail

Well-known Reagent Company Product Information

Supplier

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