Process for preparing ethylidene diacetate using iodide catalyst

Details Process for preparing ethylidene diacetate using iodide catalyst Process for preparing ethylidene diacetate using iodide catalyst

1992-04-15

1993-07-13

Shippen, Michael L.

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

Organic compounds

Carboxylic acid esters

C07C 6700

Patent

active

052275175

ABSTRACT:
The present invention relates to a process for producing ethylidene diacetate (EDDA) wherein at least one process step comprises condensing a feedstock of acetaldehyde and acetic anhydride in the presence of acetic acid and an iodide catalyst selected from the group consisting of potassium iodide, lithium iodide, methyl iodide and mixtures thereof. In a preferred embodiment, EDDA is prepared in an integrated process wherein the previously mentioned feedback is prepared by reacting dimethyl ether and acetic acid to form a first intermediate product mixture and hydrocarbonylating the first intermediate product mixture to form the condensation feedstock.

REFERENCES:
patent: 2021698 (1935-11-01), Perkins
patent: 2859241 (1958-11-01), Schnizer
patent: 2860159 (1958-11-01), Sharp
patent: 4843170 (1989-06-01), Isshiki et al.
Hydrocarbon Process (1965) vol. 44, p. 287.
Chem. Abstracts 1967-91, vol. 114, #4, Ukr. Khim. Zh., vol. 56(1) pp. 101-103.

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