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US 4,069,232 AGranted
Manufacture of gamma-butyrolactones from 1,3-glycols and esters, halides and metadioxanes thereof
AssigneeNational Distillers and Chemical Corporation
InventorsDavid Horvitz, William D. Baugh
Life of this patent
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Abstract
Gamma-butyrolactones are manufactured from olefins by reacting an olefin with an aldehyde to produce a 1,3-difunctional compound, reacting the 1,3-difunctional compound with carbon monoxide, and thereafter recovering the lactone thus produced.
Claims9
A method of manufacturing gamma-butyrolactones which comprises reacting
- a 1,3 difunctional compound selected from the group consisting of 1,3 glycols, the esters, halides and metadioxanes thereof, and mixtures thereof
- with carbon monoxide at a partial pressure of 1 to 500 atmospheres and at a temperature of 120.degree. to 325.degree. C.
- in the presence of a catalytic amount of from about 0.01 to 10 weight percent, based upon the reaction mixture, of a Group VIII element in the form of the metal or a compound or complex thereof
- and in the presence of from about 1.0 to 40 weight percent of an iodine or bromine promoter for said catalyst
- said reacting being conducted for a period of between about 5 and 15 hours, sufficient to produce gamma-butyrolactone as a major product, and
- isolating and recovering said gamma-butyrolactone.
3 more elements
Dependencies are inferred from the claim text.