Preparation of products of the reduction of 4-hydroxybutyric acid derivatives
AssigneeBASF SE
InventorsHans-Juergen Weyer, Rolf Fischer, Werner Schnurr, Norbert Goetz, Thomas Kuekenhoehner
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Abstract
Abstract of the Disclosure: Products of the reduction of 4-hydroxybutyric acid derivatives of the formula IIa ##STR1## where one of A and B is methylene and the other is cyclopropylidene, or of C.sub.1 --C.sub.4 --alkyl esters (IIb) or lactones (IIc) of these acids IIa, are prepared by hydrogenating the compounds IIa or IIb or IIc catalytically using hydrogen in the presence of a heterogeneous hydrogenation catalyst, giving novel compounds which can be used to prepare polymers.
Claims5
A process for the preparation of products (I) of he reduction of 4-hydroxybutyric acid derivatives of the formula IIa ##STR11## where one of A and B is methylene and the other is cyclopropylidene, or of C.sub.1 -C.sub.4 --alkyl esters (IIb) or lactones (IIc) of these acids IIa, which comprises hydrogenating the compounds IIa or IIb or IIc catalytically using hydrogen in the presence of a heterogeneous hydrogenation catalyst at a temperature of from 50.degree. to 400.degree. C. and at a pressure of from 1 to 400 bar.
5-Oxa [2,4 ]spiroheptane ##STR12##
2- (1-Hydroxymethylcyclopropyl )ethanol ##STR13##
Dependencies are inferred from the claim text.