17764-64-6Relevant academic research and scientific papers
Reaction of Pd(η3-C3H5)2 with cyano-olefins; reductive coupling of allyl groups in the presence of triphenylphosphine
Bertani, Roberta,Berton, Adriano,Carturan, Giovanni,Campostrini, Renzo
, p. 263 - 268 (1988)
Pd(η3-C3H5)2 reacts with tetracyanoethylene (TCNE) to give a 1/1 adduct identified as Pd(η3-C3H5)(η1-C3H5)(TCNE) on the basis of spectroscopic evidence and its behaviour in solution.A similar reaction with fumaronitrile is also described.The complex Pd(η3-C3H5)(η1-C3H5)(TCNE) reacts with triphenylphosphine to give 1,5-hexadiene and Pd(PPh3)2(TCNE); a mechanism for this reaction is proposed on the basis of low temperature 1H and 31P NMR spectroscopy study of the solution during the reaction.The mechanisms are compared with those for the Pt(η3-C3H5) system.
Palladium(0)-alkene bis(triarylphosphine) complexes as catalyst precursors for the methoxycarbonylation of styrene
De Pater, Jeroen J. M.,Tromp,Tooke, Duncan M.,Spek, Anthony L.,Deelman, Berth-Jan,Van Koten, Gerard,Elsevier, Cornelis J.
, p. 6411 - 6419 (2008/10/09)
The fluorous complex [Pd(0)(P{C6H4-p-SiMe 2(CH2CH2C6F13)} 3)2(MA)] (MA = maleic anhydride) was synthesized and characterized by its NMR spectra. Together with the nonfluorous complexes [Pd(0)(PPh3)2(alkene)] (alkene = C2H 4) (NC)2C=C(CN)2), NCC(H)= C(H)CN, MA, or benzoquinone) these were evaluated as catalyst precursors in the methoxycarbonylation of styrene. The nonfluorous C2H4 and MA complexes gave the highest conversions (the turnover number (TON) was 120; the (average) turnover frequency (TOF) amounted to 80 h-1). The fluorous complex gave a significantly lower conversion (TON about 38; TOF 26 h-1) than its nonfluorous counterpart, which is caused by a lower stability of the fluorous complex under the reaction conditions.
