1291079 Di-neo carboxylic acids BP CHEMICALS Ltd 9 Dec 1970 [19 Dec 1969] 61918/69 Heading C2C Di-neo carboxylic acids are prepared by reacting an α,w-di-isoalkyl substituted monoolefin in which the isoalkyl groups are separated by not less than 3 carbon atoms with formic acid or carbon monoxide in the presence of a catalyst which is a mineral or Lewis acid and wherein a sacrificial olefin is included in the reaction mixture. The α,w-di-isoalkyl substituted mono-olefin is suitably 2,7-dimethylootene-4 and the catalyst concentrated sulphuric acid. The sacrificial olefin is suitably a (C 4 -C 20 ) acyclic mono-olefin having a branch skeleton of the type: Examples describe the preparation of 2,2,7,7- tetramethylsuberic acid.
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