Preparation and Properties of Nickel–Phosphine Complexes Coordinated with α,β-Unsaturated Ester
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TL;DR: In this paper, a series of nickel-phosphine complexes with α, β-unsaturated esters were formulated as Ni(tertiary phosphine)nL(L=alkyl methacrylates, methyl acrylate, or methyl cinnamate; n=2 for P(C6H5)3, P(c2H5), P(CH3)2(C 6H5 ), P(P(C2H 5), P
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Abstract: Reactions of bis(1,5-cyclooctadiene)nickel, Ni(cod)2, with α,β-unsaturated esters in the presence of tertiary phosphine give a series of nickel-phosphine complexes formulated as Ni(tertiary phosphine)nL(L=alkyl methacrylates, methyl acrylate, or methyl cinnamate; n=2 for P(C6H5)3, P(C2H5)(C6H5)2, P(CH3)2(C6H5), P(C2H5)3, n=1 for P(cyclo-C6H11)3). Elemental analyses, IR and NMR spectra, and chemical properties of the complexes confirm the molecular formula. The olefinic proton signals of methyl acrylate and alkyl methacrylates coordinated to nickel shift to upfield by 2.6–4.9 ppm from those of free olefins in the 1H-NMR spectra, indicating that the α,β-unsaturated esters coordinate to nickel through the double bond. The IR spectra show only small low frequency shifts of the ν(C=O) bands of the α,β-unsaturated esters on complex formation. The reactions of Ni(P-(C6H5)3)2 (ethyl methacrylate) and Ni(P(cyclo-C6H11)3) (ethyl methacrylate) with vinyl acetate at room temperature cause the scission of the C–O bond...
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Citations
Acrylates from Alkenes and CO2, the Stuff That Dreams Are Made of
TL;DR: In this paper, the authors present a homogeneous catalyst that permits the catalytic synthesis of α,β-unsaturated acids from CO 2, alkenes, and a base.
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Darstellung und Eigenschaften von und Reaktionen mit metallhaltigen Heterocyclen, XLV. Gezielte Darstellung von Ferracyclopropanen und ‐pentanen als reaktive Zwischenstufen in der organischen Synthese
TL;DR: In this article, the properties of metal-containing Heterocycles are investigated in the presence and absence of CO in a Fe(CO)5-katalysierten Olefin-Carbonylierung.
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NMR studies of phosphinenickel(0) complexes of ethyl methacrylate Ni(PR3)2(CH2=C(CH3)COOC2H5)
TL;DR: In this paper, a series of phosphine nickel(0) complexes of ethyl methacrylate (ema), Ni(PR 3 ) 2 (CH 2 =C(CH 3 )COOC 2 H 5 ) (PR 3 = PPh 3 (Ia), PEtPh 2 (Ib) 2, PEt 2 Ph (Ic), PMe 2 Ph(Id) PEt3 (Ie)).
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Reaktionen der Cyclopropene, VII. Nickel(0)‐katalysierte Cotrimerisierungen von 3,3‐Dimethylcyclopropen mit Methylacrylat
TL;DR: In this article, a Nickel-catalyzed cotrimerisation of 3,3-dimethylcyclopropene with Methyl acrylate is described, which is catalyzed by phosphane- or phosphite-Ni(0) compounds under mild conditions (40-50°C).
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Syntheses and structures of nickel(0) complexes containing the methyl methacrylate monomer as ligand
TL;DR: In this article, the crystal structures of 1 and 2 have been determined and reveal an η2-CC mode of co-ordination of the methyl methacrylate ligands, with the CO2Me groups pendant and outside the nickel coordination sphere.
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C-H bond cleavage in alkenyl carboxylates promoted by methylcopper complexes and formation of six-membered acetoxyvinylcopper chelates
TL;DR: Methylbis(triphenylphosphine)copper(I) etherate (I) reacts with vinyl acetate, evolving methane to form a six-membered cyclic product, 2-acetoxyvinylbis(trihexylphophosphine)-copper[I] (II) (III).
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