Dehydrogenation of diols

Details Dehydrogenation of diols Dehydrogenation of diols

1990-07-11

1992-05-05

Ivy, C. Warren

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549274, 549295, 549328, C07D31304, C07D30910, C07D30720

Patent

active

051109549

ABSTRACT:
A process is provided for the production of lactones by the catalytic dehydrogenation of aliphatic diols containing from 3-7 carbon atoms and optionally one or more ether linkages in the diol chain. The reaction is conducted in the liquid phase with a copper chromite catalyst at a temperature of from about 150.degree.-250.degree. C. in the absence of added hydrogen, and preferably at reaction conditions where yields are about 99%.

REFERENCES:
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patent: 4433175 (1984-02-01), Kaufhold
patent: 4465847 (1984-08-01), Shvo
patent: 4486607 (1984-12-01), Webb
patent: 4960906 (1990-10-01), Drent
Berthon et al., Preparation D'Esters Par Deshydrogenation D'Alcools . . . , Tetrahedon Letters, vol. 22, No. 41, pp. 4073-4076, 1981.
Nanavati, "Catalytic Dehydrogenation of Alcohols," J. Indian Chem. Soc., vol. LI, May 1974, pp. 551-552.
Reeve et al., "Catalytic Dehydrogenation of Alcohols in the Liquid Phase Using Ethylene as a Hydrogen Acceptor," Oct. 1940, 2874-76.

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