Process for manufacture of catechol

Details Process for manufacture of catechol Process for manufacture of catechol

1974-10-17

1976-10-19

Thomas, Jr., James O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2603485V, 260348C, 2603485F, 260631H, 260666A, C07C 3908

Patent

active

039871126

ABSTRACT:
A 4-stage process for the production of catechol, starting with a mixture of cyclohexanol-cyclohexanone ("KA-oil"), is provided herein whereby the starting mixture is first hydrotreated to convert the cyclohexanone to cyclohexanol, the cyclohexanol dehydrated to form cyclohexene which, in turn, is oxidized to 1,2-epoxy-3-hydroxy-cyclohexane. Dehydrogenation of this latter compound yields catechol. Volatiles and residue from the second stage are advantageously recycled to the KA-oil feed stream, and H.sub.2 from the last stage recycled to the hydrotreating step.

REFERENCES:
patent: 2599089 (1952-06-01), Castle et al.
patent: 3627833 (1971-12-01), Tobis

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