Patent Number: 6,169,189

Title: Process for preparing tetrahydrofuran from dialkoxybutenes

Abstract: A process for preparing tetrahydrofuran, which comprises reacting 1,4-butenediol diethers of the formulae I and/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 C. under 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 and a novel process for preparing 1,4-butanediol diethers of the formula I by metathesis are described.

Inventors: Fischer; Rolf (Heidelberg, DE), Pinkos; Rolf (Bad Durkheim, DE), Schafer; Martin (Ludwigshafen, DE), Hohn; Arthur (Kirchheim, DE), Schwab; Peter (Bad Durkheim, DE)

Assignee: BASF Aktiengesellschaft

International Classification: C07C 41/26 (20060101); C07C 41/00 (20060101); C07C 41/01 (20060101); C07D 307/00 (20060101); C07D 307/08 (20060101); C07D 307/08 (); C07D 307/02 ()

Expiration Date: 01/02/2018