Copper sulfate trifluoromethanesulfonate

Phosphomolybdic acid-Potassium di-chromate-Copper(II) sulfate, 248 Tin(II) trifluoromethanesulfonate, 301 Other unsaturated carbonyl compounds Lead tetraacetate, 155 Pyrylium perchlorate, 263 Zinc-copper couple, 348 a-Substituted-a, p-unsaturated carbonyl compounds... 

Reactions of organomagnesium compounds with dialkyl sulfates or alkyl sulfonates often give satisfactory yields of the products of displacement of sulfate or sulfonate. Side-reactions have been observed, but they can often be avoided for example, an excess of the sulfate or sulfonate should be used with Grignard reagents, as some is consumed by nucleophilic attack by halide ion [A]. The dialkyl sulfates are reactive, but hazardous. Toluenesulfonates (tosylates) are less reactive, but their reactions are catalysed by copper complexes the reactions of trifluoromethanesulfonates (triflates) are catalysed by nickel complexes. Reactions of Grignard reagents with secondary tosylates appear to follow an Sn2 mechanism, with inversion of configuration [43],... 

A round-bottom flask was charged with a mixture of 2,6-dimethylphenyl trifluoromethanesulfonate (127.1 mg, 0.5 mmol), anhydrous lithium chloride (4 mmol), copper(I) bromide (0.2 mmol), and dichlorobis(triphenylphosphine)-palladium(II) (10-20 mol %) suspended in DMF (2.5 cm ). 2-Methoxyphenyl-tributyltin (1-1.5 mmol) was added to the mixture in two portions, i.e., at the beginning of the reaction and at half completion. A crystal of 2,6-bis(l,l-dime-thylethyl)-4-methylphenol (BHT) was added as an inhibitor of radical processes, and the mixture was then heated to reflux, under argon, during 8 - 24 h. Water and Et20 (25 cm ) was added, and the organic phase was washed subsequently with hydrochloric acid solution (1.5 mol dm , 6 x 20 cm ), a saturated solution of potassium fluoride (5 x 20 cm ), and finally dried over anhydrous sodium sulfate. Evaporation to dryness furnished a residue and that was suspended in ethyl acetate and the insoluble material was filtered off. The filtrate was... 

EPOXIDES Alumina. Bisfbenzonltrile)-dichloropalladium(H). Copper(II) sulfate-Pyridine. Diborane. Diphenyl d isu Ifide-Tri-n-bu t y Iphosphine. Organo-cuprates. Sodium cyanoborohydride. Sodium phenyl selenide. Trimethyl-sllyl phenyl sclcnidc. Trimethylsilyl trifluoromethanesulfonate. Triphenyl-phospliine-Thiocyanogen. 

Copper(I) r-butoxide, 237 Copper(II) chloride, 106 Copper cyanide, 1 Copper(l) iodide, 107 Copper(I) oxide, 107 Copper(II) sulfate, 107 Copperf I) trifluoromethanesulfonate, 108-110... 

A 25-mL flame-dried Schlenk tube flushed with argon is charged with ethyl 4-iodobenzoate (2.9 mmol, 773 mg), 1,2-dimethoxyethane (dme) (5 mL) and cooled to -20 °C. Isopropylmagnesium chloride (2.9 mmol, 1.33 mL of a 2.1-M solution in tetrahydrofuran) is then slowly added and the reaction mixture is stirred at -20 °C until GC analysis of reaction aliquots indicates complete exchange. Subsequently, a solution of copper(I) cyanide di(lithium chloride) (2.8 mmol, 2.8 mL of a 1-M solution in tetrahydrofuran) is added and the reaction mixture is stirred for 20 min. A solution of (2,2-diphenylvinyl)trifluoromethanesulfonate (330 mg, 1 mmol) and tris(acetylacetonato)iron (38 mg, 0.1 mmol) in 1,2-dimethoxyethane (3 mL) is added at once at -20 °C and the reaction mixture is stirred at room temperature for 1 h. The reaction is quenched with sat. aq. ammonium chloride and extracted several times with diethyl ether. The combined organic layers are washed with a 2 1 mixture of aq. ammonia and aq. ammonium chloride, and sat. brine, and are dried over magnesium sulfate and concentrated under reduced pressure. Purification by column chromatography (pentane-diethyl ether, 99 1) affords the product as a yellow oil 254 mg (77%). 

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