| 摘要 |
The invention relates to a process for the carbonylation of acetylenically unsaturated compounds, whereby a feedstock comprising an acetylenically unsaturated compound and a relatively minor amount of an 1,2-alkadiene compound is contacted under carbonylation conditions with carbon monoxide and a hydroxylated co-reactant, in the presence of a catalyst system, based on: a) a source of cations of one or more metals of Group VIII of the Periodic Table; b) a phosphine of the general formula PR<1>R<2>R<3> or R<2>R<3>M-R-PR<1>R<2>, wherein R<1> represents a heteroaryl group of formula (I) wherein A represents a functional group that is electron-withdrawing relative to hydrogen, and each of X, Y and Z independently represents a nitrogen atom or a C-Q group, whereby Q is a hydrogen atom or a substituent, R<2> and R<3> independently represent a substituted or non-substituted (hetero)hydrocarbyl group or have the aforesaid meaning of R<1>, M is an element of Group VIa, preferably a nitrogen or phosphorus atom, R represents a bridging (substituted) hydrocarbyl group having 1 to 4 carbon atoms in the bridge; and c) a protonic acid. |
