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The bi- to quadridentate 1,3-dioxolane and 1,4-dioxane phosphane ligands Ph n P(CH 2 C 3 H 5 O 2 ) 3-n  (1, 2). PhP(CH 2 C 4 H 7 O 2 ) 2  (3), and [-CH 2 P(Ph)CH 2 C 4 H 7 O 2 ] 2  (4) have been investigated with regard to their efficiency in the carbonylation of methanol to acetic acid using cobalt as a component of the catalyst. While 1, 2 are unstable towards acetic hydrolysis. 3 and 4 lead to methanol conversions of &gt;95%, and selectivities to methyl acetate and acetic acid of 33%, and 60%, respectively.

zeitschrift für naturforschung b

Neuartige basische Liganden für die homogenkatalytische Methanolcarbonylierung, XIX [1] Cobalt-katalysierte Carbonylierung von Methanol zu Essigsäure / Novel Basic Ligands for the Homogeneous Catalytic Carbonylation of Methanol, XIX [1] Cobalt Catalyzed Carbonylation of Methanol to Acetic Acid