Coproduction of butanediol and tetrahydrofuran and their subsequ

Details Coproduction of butanediol and tetrahydrofuran and their subsequ Coproduction of butanediol and tetrahydrofuran and their subsequ

1986-02-18

1987-04-07

Raymond, Richard L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

568864, 568885, C07D30708, C07C 2706

Patent

active

046562974

ABSTRACT:
Mixtures of tetrahydrofuran and 1,4-butanediol at a predetermined mole ratio are produced by the hydrogenation of dimethylsuccinate in the presence of a copper chromite catalyst wherein said ratio is controlled by conducting the hydrogenation within a particular temperature range. Methanol is added to the ester feed to increase conversion and reduce transesterification. Tetrahydrofuran and 1,4-butanediol are separated from a mixture which also contains water and methanol by a series of distillations including a superatmospheric distillation.

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Couteau et al., "Hydrogenation of dialkyl maleates or fumarates over Ba-stabilized Cu Chromite", Chemical Abstracts, p. 474, vol. 85, 1976.

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