Suppression of side reactions in catalytic hydrogenation of dies

Details Suppression of side reactions in catalytic hydrogenation of dies Suppression of side reactions in catalytic hydrogenation of dies

1976-07-26

1978-09-26

Garner, Vivian

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

Organic compounds

Carboxylic acid esters

260409, 260410, 2604106, 560231, C07C 6728

Patent

active

041172426

ABSTRACT:
A process is provided for hydrogenation of unsaturated diesters produced by the reaction of conjugated diolefin and monocarboxylic acid in which the diester is contacted with hydrogen in the presence of a noble metal and a monoamine. The presence of the monoamine suppresses hydrogenolysis of the diester to monoester. In a preferred embodiment 1,4-diacetoxy-2-butene is hydrogenated in the presence of a palladium catalyst and a monoamine selected from methylamine, n-butylamine, triethylamine, tripropylamine, quinoline, and toluidine.

REFERENCES:
patent: 2027182 (1936-01-01), Lazier
patent: 3849480 (1974-11-01), Knowles et al.
patent: 3872163 (1975-03-01), Shimizu et al.

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