Organocopper compounds solubility

Pentafluorophenylcopper is representative of a series of fluori-nated organocopper compounds that are highly soluble in organic solvents, more thermally stable than their hydrocarbon analogs, and useful as synthetic intermediates. " Pentafluorophenylcopper has been used to introduce the pentafluorophenyl groups and as a reagent for an improved Ullman diphenyl ether synthesis. It is... 

A very stable type of organocopper compound, a metalated ylide, is obtained from the reaction between copper(I) chloride and trimethyl-methylenephosphorane in an aromatic solvent. The compound is soluble in aromatic and chlorocarbon solvents and can be sublimed 256a). 

For the preparation of the organocopper compounds, RCu, Cu(I) halides (preferably the bromide) are employed, although Cu(I)CN Cu(I)SCN Cu(I)03SCF3 (soluble in benzene ) or the ether-soluble phosphine complexes of these salts [e.g., Cu(I)I[P(Bu-n)3]-tetramer] can be used also. 

The cuprate complexes have better thermal stability and solubility than the parent organocopper compounds. They can be prepared directly in high yields from the 2 1 reaction of RLi with CuBr [Eqs. (c) -1- (d)] or quantitatively via the 1 1 reaction of... 

Organocopper compounds inhibit oxidation of thin films of mineral oil (and ester) at 250°C [14, 21]. Under these conditions, polycondensation and polymerisation reactions are suppressed such that only medium-sized, oil-soluble polymers are formed. This leads to an improved control of viscosity [103]. A further stabilisation step, mainly in the upper part of the piston, may result from an interaction... 

Lewis base additives stabilize and/or solublize organocopper compounds... 

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