Manufacture of pent-3-enoic acid and its alkyl esters

Details Manufacture of pent-3-enoic acid and its alkyl esters Manufacture of pent-3-enoic acid and its alkyl esters

C - Chemistry, Metallurgy

07

C

260/520, 260/485

C07C 57/02 (2006.01) C07C 51/14 (2006.01) C07C 69/52 (2006.01)

Patent

CA 1095529

O.Z. 32,076 ABSTRACT OF THE DISCLOSURE: A process for the manufacture of pent-3-enoic acid and its alkyl esters, of the general formula CH3-CH=CH-CH2-CO-OR where R is hydrogen or alkyl of 1 to 4 carbon atoms, comprising carbonylating butadiene with carbon monoxide and a compound ROH at from 300 to 1,000 bars CO pressure and from 100 to 160°C in the presence of cobalt catalysts and nitrogen bases, wherein C4 cuts are used as starting materials and a tertiary amine having a pKA of from 3 to 11 is used as the nitrogen base. The pent-3- enoic acid or alkyl esters produced may be used for the manufac- ture of adipic acid or its alkyl esters, which compounds are start- ing materials for the manufacture of nylons.

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