Synthesis and reactions of nickel and palladium carbon-bound enolate complexes

Journal Article · Mon Jan 01 04:00:00 EST 1990 · Organometallics; (USA)

DOI:https://doi.org/10.1021/om00115a007· OSTI ID:6620875

Burkhardt, E R; Bergman, R G; Heathcock, C H ^[1]

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1. Univ. of California, Berkeley (USA)

Nickel and palladium carbon-bound enolates of the general formula {eta}{sup 5}-C{sub 5}R{sub 5}(Ph{sub 3}P)MCHR{prime}COR{double prime} (R = H, CH{sub 3}; R{prime} = H, CH{sub 3}; R{double prime} = t-Bu, Ph, O-t-Bu) were prepared. Cp{sup *}(Ph{sub 3}P)NiCH{sub 2}CO{sub 2}-t-Bu (1e) was characterized by X-ray diffraction. Compound 1e crystallizes in the monoclinic space group P2{sub 1}/n with unit-cell dimensions a = 13.6110 (20) {angstrom}, b = 12.7454 (13) {angstrom}, c = 17.8571 (23) {angstrom}, {beta} = 105.544 (11){degree}, Z = 4, observed data 4,091, R = 4.53%, and R{sub w} = 4.19%. Reactions of these nickel and palladium enolates with aldehydes and other electrophilic reagents were examined. The nickel ketone enolates were shown to react with 2 equiv of benzaldehyde to deliver products resulting from a Tischtschenko-type oxidation/reduction process. Cp(Ph{sub 3}P)NiCH{sub 2}CO-t-Bu reacts with phosphines (L) to yield paramagnetic nickel(I) complexes of general formula Cp(L){sub 2}Ni.

• OSTI ID: 6620875
• Journal Information: Organometallics; (USA), Journal Name: Organometallics; (USA) Vol. 9:1; ISSN 0276-7333; ISSN ORGND
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400200* -- Inorganic
Organic
& Physical Chemistry
ALCOHOLS
CHEMICAL REACTIONS
COMPLEXES
CRYSTAL STRUCTURE
DATA
DATA ANALYSIS
ENOLS
EXPERIMENTAL DATA
HYDROXY COMPOUNDS
INFORMATION
NICKEL COMPLEXES
NUMERICAL DATA
ORGANIC COMPOUNDS
PALLADIUM COMPLEXES
SYNTHESIS
TRANSITION ELEMENT COMPLEXES