Patent ID: 6403845
Filing Date: 2002-06-11
Classification: C07C

Abstract:
A process for preparing 1,5-pentanediols of the formula (I) by single-stage reaction of alkoxydihydropyrans of the formula (II) where, in the formulae (I) and (II),R, Râ€², Râ€³, Râ€²â€³ can be identical or different and are each hydrogen or a linear or branched saturated hydrocarbon radical having from 1 to 20 carbon atoms in which the hydrocarbon chain may contain O, S and N as heteroatoms and which may be monosubstituted or polysubstituted by hydroxy, thiol or amino groups or halogens, with water and hydrogen in the presence of a catalyst comprising oxides of nickel, zirconium and copper.