Chemistry is traditionally divided into organic and inorganic chemistry. Safety of 1,1′-Bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 95464-05-4
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?, alpha = 85.303(9)?, beta = 76.556(9)?, gamma = 80.447(10)?, Z = 2, R(wR2) = 0.0487(0.1083).
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Reference：
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method