Preparation of .alpha.,.beta.-unsaturated carboxylic acids via M

Details Preparation of .alpha.,.beta.-unsaturated carboxylic acids via M Preparation of .alpha.,.beta.-unsaturated carboxylic acids via M

1977-05-16

1979-03-27

Garner, Vivian

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

Organic compounds

Carboxylic acids and salts thereof

204 79, 260584A, 260593R, 260601R, 562405, 562418, 562421, 562507, 562510, 562526, 562532, 562600, C07C 5100, C07C 5702, C07C 5704

Patent

active

041467353

ABSTRACT:
A process for the preparation of a .alpha.,.beta.-unsaturated carboxylic acid by reacting formaldehyde, another aldehyde and a mineral acid salt of a secondary amine to form an intermediate Mannich base salt; oxidizing the Mannich base salt to the corresponding aminoacid salt; thermally cracking the aminoacid salt to yield an aqueous reaction products mixture of an .alpha.,.beta.-unsaturated carboxylic acid and the mineral acid salt of the secondary amine; and separating and isolating the aqueous reaction products.

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