Patent ID: 9199961
Filing Date: 2015-12-01
Classification: C07C,C07D

Abstract:
1. A method for preparing caprolactone, comprising the steps of: (a) hydrogenating 5-hydroxymethyl-2-furfuraldehyde to 2,5-tetrahydrofuran-dimethanol, (b) converting 2,5-tetrahydrofuran-dimethanol by hydrogenation, whereby at least part of the 2,5-tetrahydrofuran-dimethanol that is hydrogenated forms 1,2,6-hexanetriol in the presence of a rhodium-rhenium catalyst, (c) converting 1,2,6-hexanetriol to 1,6-hexanediol by hydrogenation, and (d) converting 1,6-hexanediol into caprolactone.