FIELD: organic chemistry. SUBSTANCE: invention relates to a method of isomerization of the branched carboxylic acids, to a process of isomerization of at least a single saturated branched carboxylic acid at heating. Process is carried out in the presence of effective amount of iridium catalyst and iodine or bromine promoter at molar ratio promoter/Ir = 0.1/1-20/1. Method ensures to increase value of methylglutaric and ethylsuccinic acids due to their conversion to adipic acid. EFFECT: improved method of isomerization. 14 cl, 16 ex
| Title | Year | Author | Number |
|---|---|---|---|
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|
RU2117656C1 |
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|
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| METHOD OF BUTADIENE OXYCARBONYLATION | 1996 |
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| METHOD OF ISOLATION OF ALIPHATIC SATURATED DIACIDS WITH SIX CARBON ATOMS FROM THEIR MIXTURES WITH ADIPIC ACID | 1995 |
|
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SU1836325A3 |
