329900-68-7Relevant academic research and scientific papers
Cyclotrimerization of phenylethynes to fulvene: Reactivity of cis-dichloro(1, 1′-bis(diphenylphosphino)ferrocene)palladium(II)
Kim, Hyo-Jean,Choi, Nam-Sun,Lee, Soon W.
, p. 67 - 73 (2000)
In the presence of triethylamine (NEt3) and ethanol (EtOH), phenylethyne (or phenylacetylene, PhC≡CH) underwent cyclotrimerization: cis-dichloro(1,1′-bis(diphenylphosphino)ferrocene)palladiuni(II), [PdCl2(dppf)] (1), reacted with phenylethyne to give [Pd(dppf)(2,3,5-triphenylfulvene)] (2). Reaction of 2 with dimethyl acetylenedicarboxylate in dichloromethane gave [Pd(dppl)(CH3O2CC≡CCO2CH3)] (3) and a free 2,3,5-triphenylfulvene. Crystallographic data for 2·H2O: triclinic space group P1?, a = 10.658(2), b = 10.896(2), c = 21.080(3) A?, α = 85.303(9)○, β = 76.556(9)○, γ = 80.447(10)○, Z = 2, R(wR2) = 0.0487(0.1083).
