Patent ID: 6169189
Filing Date: 2001-01-02
Classification: C07C,C07D

Abstract:
A process for preparing tetrahydrofuran, which comprises reacting 1,4-butenediol diethers of the formulae I and/or II RO--CH.sub.2 --CH.dbd.CH--CH.sub.2 --OR I RO--CH.sub.2 --CH.sub.2 --CH.dbd.CH--OR II, where the R radicals can be identical or different and are C.sub.1 -C.sub.15 -alkyl or cycloalkyl radicals, C.sub.6 -C.sub.12 -aryl radicals or C.sub.7 -C.sub.15 -aralkyl radicals, with water and hydrogen at from 20 to 300.degree. C. and from 1 to 300 bar in the presence of catalysts or catalyst combinations which comprise components which are both capable of hydrogenation and have acidic or basic centers.