Process for preparing unsaturated carboxylic acid ester

Details Process for preparing unsaturated carboxylic acid ester Process for preparing unsaturated carboxylic acid ester

1990-09-17

1991-11-26

Dees, Jose G.

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

Organic compounds

Carboxylic acid esters

560205, 560211, 560214, 562599, C07C 67317

Patent

active

050683993

ABSTRACT:
Disclosed is a process for preparing, .alpha., .beta.-unsaturated carboxylic acid ester from .alpha.-hydroxycarboxylic acid ester, a .alpha.-alkoxycarboxylic acid ester or .beta.-alkoxycarboxylic acid ester as a starting material by a vapor-phase catalytic reaction in the presence of a crystalline aluminosilicate modified with an alkali metal and a platinum group element as a catalyst.
According to the process, .alpha., .beta.-unsaturated carboxylic acid can be produced efficiently.

REFERENCES:
patent: 3487101 (1969-12-01), Volker et al.
patent: 4833267 (1989-05-01), Nakashima et al.
patent: 4933487 (1990-06-01), Hoelderich et al.

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