TETRAKIS(ACETONITRILE)COPPER (I) HEXAFLUOROPHOSPHATE

1. Useful catalyst for the Ullmann synthesis.
2. Catalytic asymmetric [2,3]-Sigmatropic rearrangement of sulfur ylides.
3. Precatalyst for enantioselective N–H insertion reactions with diazoesters and anilines.

Tetrakis(acetonitrile)copper(I) hexafluorophosphate can be employed as a catalyst for the synthesis of triazolo[1,2-a]indazole-1,3,8-trione and 2H-indazolo[2,1-b]phthalazine-trione derivatives by the reaction of aryl aldehydes, dimedone and urazole or phthalhydrazide, respectively.
It can also be used as a copper precursor:

• For the formation of Cu₂S/CdS nanorod junctions by cationic exchange process.
• To synthesize monometallic copper macrocyclic biquinazoline ligand [Cu(Mabiq)].
• To prepare the cuprous complex [Cu(2-iQBO)(POP)]PF₆]; where 2-iQBO=2-(1′-isoquinolyl)benzoxazole and POP=bis[2-(diphenylphosphino)phenyl]ether, which can form luminescent pseudo-polymorphs.
• For the synthesis of [Cu(NHC)₂]PF₆ complexes [(NHC = N-heterocyclic carbene] which can be further used in the hydrosilylation of carbonyl compounds.