Neuartige basische Liganden fur die homogenkatalytische Methanolcarbonylierung XVII. Dioxanylmethyldiorganylphosphane als Steuerliganden bei der Methanol(hydro)carbonylierung zu Acetaldehyd und Essigsaure

Article abstract of DOI:10.1016/0022-328X(88)80439-X

The (ether-phosphane) ligands R2PCH2(1,4-diox) (1a-c) (R=Ph (a), Mess (b), Cy (c); diox=dioxane residue) and Ph2PCH2(1,3-diox) (2a) are obtained from the corresponding phosphides LiPR2 and 2-chloromethyl-1,4-dioxane and -1,3-dioxane, respectively, at -40 ^oC in ether.High pressure experiments can provide useful information on conversion and selectivity in the (hydro)carbonylation of methanol, if parameters like educt/catalyst ratio, effect of substituents of the ligands 1a-c, 2a, directed application of cobalt complexes, and composition of catalyst and synthesis gas are varied.The possibility that there is a cobalt-catalyzed (hydro)carbonylation of methanol to acetaldehyde and acetic acid cycle is explored.