Process for the preparation of a 5-alkyl-butyrolactone

Details Process for the preparation of a 5-alkyl-butyrolactone Process for the preparation of a 5-alkyl-butyrolactone

1982-05-21

1983-12-13

Milestone, Norma S.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549295, C07D30732

Patent

active

044206224

ABSTRACT:
The preparation of 5-alkyl-butyrolactones is described using C.sub.8 hydrocarbon levulinate esters, with side-chain alkyl substituents of up to 4 carbon atoms as starting material, with the reaction being conducted with hydrogen at a temperature of from 150.degree. to 325.degree. C., in the gas phase, and in the presence of a hydrogenation catalyst composed of metals of Group VIII or Group Ib of the Periodic Table. The process provides extremely high conversion rates and lactone yields, the prolonged catalyst activity.

REFERENCES:
patent: 2786852 (1957-03-01), Dunlop et al.

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