Trifluoromethyl tris triphenylphosphine -copper

Preparative Methods the first synthesis of complex 1 was performed by transmetalation of Cu(OR)(PPh3)3 (where OR = 0CH(CF2) or OPh) with Me3SiCF3. According to a recent method, complex 1 may be conveniently prepared from Cu(PPh3)3F (generated irom CuF2 and PPhy) by transmetalation with Me3SiCF3. 

Purification inert filtration after precipitation from THF. 

Handling, Storage, and Precautions white powder. Common impurities (Ph3P and Ph3PO, detected by P NMR). Air stable for at least a month with minimal decomposition. Slow oxidation to Cu(II) and Ph3PO when stored under air for longer periods of time. 

Trifluoromethylation of Propargylic Halides and Trifluoro-acetates. It has been reported that propargylic halides and tri-fluoroacetates react with 1, affording allenylic (eq 2) and propargylic (eq 3) trifluoromethylated products. The outcome of the 

Y Noma, J. Hirano, M. Komiya, S., I torg. Chim. Acta 2000, 309, 151. 

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