Hydrogenation of citric acid and substituted citric acids to 3-s

Details Hydrogenation of citric acid and substituted citric acids to 3-s Hydrogenation of citric acid and substituted citric acids to 3-s

1987-01-23

1988-09-20

Milestone, Norma S.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549508, C07D30732, C07D30708

Patent

active

047727292

ABSTRACT:
A process is disclosed for preparing 3-substituted tetrahydrofuran, 3- and 4-substituted butyrolactones and mixtures thereof comprising hydrogenating a hydrogenatable precursor in the presence of an aqueous reaction medium and a catalyst comprising palladium and rhenium and at least one support selected from the group consisting of titanium oxide, zirconium oxide, and carbon.

REFERENCES:
patent: 4096156 (1978-06-01), Freudenberger et al.
patent: 4105674 (1978-08-01), De Thomas et al.
patent: 4550185 (1985-10-01), Mabry et al.
patent: 4609636 (1986-09-01), Mabry et al.
Abstract of JA-7300823-R (Jan. 1973).
Abstract of J6 1115-079-A (Jun. 1986).

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