53358-17-1Relevant academic research and scientific papers
Applications of Homogeneous Water-gas Shift Reaction. IV. Hydrocarbonylation and Dimerization of Methyl Acrylate with CO and H2O
Murata, Kazuhisa,Matsuda, Akio
, p. 2195 - 2199 (1982)
Hydrocarbonylation of methyl acrylate with CO and H2O forms dimethyl 4-oxopimelate in 94percent yield based on H2O, the Co2(CO)8-1,2-bis(diphenylphosphino)ethane (diphos) catalyst system being used as in the case of ethylene or propylene.Increasing temperature tends to promote the dimerization and/or hydrodimerization of methyl acrylate to give 1,3-bis(methoxycarbonyl)-1-butene and/or dimethyl-2-methylglutarate.Effects of CO pressure and H2O concentration on the hydrocarbonylation and dimerization were examined at 135 and 165 deg C.Catalytically active intermediates for the hydrocarbonylation take part in the dimerization of methyl acrylate.
Oxidative addition of benzyliminium tetraphenylborate to Pd(dba)(dppe): Synthesis and catalytic activity of [(dppe)Pd(dba)-{η1(N)-PhCH2N=CMe2}] (BPh4)2
Aresta, Michele,Dibenedetto, Angela,Amodio, Eliana,Tommasi, Immacolata
, p. 2188 - 2193 (2007/10/03)
The synthesis and catalytic activity of the new dicationic Pd11 complex [(dppe)Pd(dba){η1(N)-PhCH2N=CMe2}] (BPh4)2 from the Pd0 complex Pd(dba)(dppe) and [(PhCH2)HN= CMe2]BPh4 are described. [(PhCH2)HN=CMe2]BPh4 adds to Pd(dba)(dppe) under mild conditions through a selective N-H activation. The resulting species further reacts with [(PhCH2)HN=CMe2]BPh4 and generates N-benzyl-N-isopropylamine and [(dppe)Pd(dba){η1(N)-PhCH2N= CMe2}](BPh4)2. The latter catalyzes the dimerization of methyl acrylate (MA) and the co-oligomerization of MA with styrene. Significant changes of the selectivity in the dimerization of MA have been found, e.g. changing the solvent from methyl acrylate (mostly tail-to-tail, T-T, coupling) to the ionic liquid [bmim]BF4 (T-T and head-to-tail, H-T, coupling). Wiley-VCH Verlag GmbH, 69451 Weinheim, Germany, 2002.
