The invention relates to a catalyst system for carbonylating olefinically or acetylenically unsaturated compounds with carbon monoxide and a nucleophile compound, containing (a) palladium; (b) a phosphine and (c) a polymer containing nitrogen which is soluble in the reaction mixture, with the exception of polyvinyl polymers with aromatic radicals containing nitrogen on the polymer chain. The invention also relates to a method for carbonylation in the presence of one such catalyst system.
Bis(phospha-adamantyl)alkanes: a new class of very bulky diphosphines
作者:Victoria Gee、A. Guy Orpen、Hirihattaya Phetmung、Paul G. Pringle、Robert I. Pugh
DOI:10.1039/a902434d
日期:——
Adamantane-like cages are formed when H2P(CH2)nPH2 (n = 2 or 3) react with acetylacetone or trifluoroacetylacetone and the crystal structures of the dichloropalladium(II) complexes of the C3-diphosphine ligands show that their cone angles are much larger than But2P(CH2)3PBut2; a diphospha-adamantane derived from o-C6H4(PH2)2 is also described.