Copper-hexafluoroacetylacetonate

The first bismuthonium ylide to be prepared and isolated was triphenylbismuthonium tetraphenylcyclopentadienylide, made by thermal decomposition of diazotetraphenylcyc-lopentadiene in the presence of triphenylbismuth . More recently some other bismuthonium ylides (Pli3Bi=CX2, X = RCO or RSO2) have been prepared and isolated by the diazo method, using copper hexafluoroacetylacetonate as catalyst... 

C2iHft 3ClNftNi06, Acetylacetonato-C meso-(5,5,7,12,12,14-hexamethyl-1,4,8,1l-tetra-azacyclotetradecane)nickel(II) perchlorate, 39B, 666 C2 2H16CuFgN20ft, (Acetylacetonato)-(hexafluoroacetylacetonato)-(o-phenanthroline)copper(II), 46B, 976 C22H1BCUF6N2O5 H2O, Aqua-(acetylacetonato)-(o-phenanthroline)copper hexafluoroacetylacetone hydrate, 46B, 976 C22H2iCuNOft, 4-Methylpyridine bis(o-hydroxyacetophenonato)copper-(II), 34B, 512... 

Cobalt, Af,AP-ethylenebis(salicylideniminato)-complexes with bis(hexafluoroacetylacetone)copper, 2, 387... 

MCjSO solution Hibbert (1974) Protonated amine salt with magnesium tristhexafluoro-acetylacetonate) (Truter and Vickery, 1972) CFjCOOH solution (Alder el al., 1968) Altman el al. (1978) Protonated amine salt with copper(ll) tris(hexafluoroacetylacetonate) (Truter and Vickery, 1972) Hydrobromide salt (Pyzalka el al., 1983) Staab el al. (1983) Staab el al. (1988a) Saupe ei al. (1986) Staab and Saupe (1988) Staab el al. (1988b) "Zirnstein and Staab (1987). 

In a related study the adduct of hexafluoroacetylacetonate copper(II) (d ) with the free radical base 2,2,6,6-tetramethylp5nidine-N-oxyl,... 

For cyclopropanation of very electron-rich alkenes such as vinyl ethers copper(II) trifluoroacetate, copper(II) hexafluoroacetylacetonate or rhodium(II) acetate are the catalysts of choice. Copper trifluoroacetate catalysed cyclopropanation of vinyldia-zomethane with dihydropyran gives the corresponding vinyl cyclopropane adduct in low yield (equation 17). In contrast, catalytic decomposition of phenyldiazomethane in the presence of various vinyl ethers results in high-yield phenylcyclopropane formation (equations 18 and 19)27. 

Talbott12 obtained the fluorinated 1,2-dioxolan (35) by treatment of the copper(II) or nickel(II) chelate of hexafluoroacetylacetone with fluorine at — 20°. 

The related volatile hexafluoroacetylacetonate, Pd(hfa cac)2, and several mixed allyl diketonates, including the liquid [Pd(C3H5)(Bu C(0)CH(CO)C3F7)], are used for chemical vapor deposition on surfaces (CVD) and subsequent reduction to Pd. The mechanism of formation of a Pd film on a copper surface by thermal decomposition of deposited Pd(hfacac)2 has been studied in detail. Reduction with H2 can also be used and it produces polycrystalline Pd. 

Kido, T., Ikuta, Y, Sunatsuki, Y. et al. (2003) Nature of Copper(II)-lanthanide(lll) magnetic interactions and generation of a large magnetic moment with magnetic anisotropy of 3d-4f cyclic cylindrical tetranuclear complexes [Cu LLn (hfac)2]2, (H3L = l-(2-hydroxybenzamido)-2-(2-hydroxy-3- methoxyben-zylideneamino)ethane and Hhfac = hexafluoroacetylacetone, Lnlll = Eu, Gd, Tb, Dy). Inorganic Chemistry, 42, 398 08. 

Direct Combination of a 1,3-Diketone, an Amine, and a Metal Ion. Direct combination is a potentially useful reaction, and it has been used to prepare metal-salicylaldimine compounds. The procedure consists of mixing (and refluxing if necessary) a stoichiometric mixture of salicylaldehyde with an amine, a metal ion, and a base in dilute aqueous methanol. This procedure has not been applied commonly to the preparation of metal derivatives of jS-keto imines, although the preparation of 4,4 -(ethylene-dinitrilo)di-2-pentanonatocopper(II) from 2,4-pentanedi-one (acetylacetone), ethylenediamine, and copper has been described. Attempts to effect condensation of 1,1,1,5,5,5-hexafluoro-2,4-pentanedione (hexafluoroacetylacetone) and ethylenediamine by direct combination of the reactants in the presence of copper(II) acetate were imsuccessful. ... 

Co-crystallization of a mixture of [Y(hfa)3] and [Cu(acac)2] affords [Y(hfa)3(H20)2Cu(acac)2] (hfa = hexafluoroacetylacetonate) in which the individual metal diketonate complexes are linked by hydrogen bonds. Heating in vacuum induces ligand exchange and the liberation of gaseous [Cu(hfa)2]. Structures of heterodinuclear complexes show lanthanide-copper distances of approximately 3.2A and some tetrahedral distortion around copper. There is a small ferromagnetic interaction between the lanthanide and copper ions (/=0.8cm ). " ... 

For some of the reactions depicted in Scheme 14, copper(II) hexafluoroacetylacetonate [CufhfacaclJ proved to be a better catalyst than other chelates neither cyclopropanes nor allylic insertion products were found, and the yield of dihydrofuran was not affected by temperature in the range 70-132 °C However, in phenylogous vinyl ethers such as 4-methoxystyrene or trozii-anethole, cyclopropanes (58a, b) rather than dihydrofurans resulted... 

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