Process for preparing organic compounds containing an alkoxyalky

Details Process for preparing organic compounds containing an alkoxyalky Process for preparing organic compounds containing an alkoxyalky

1985-06-25

1988-04-19

Terapane, John F.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252402, 252403, 560 2, 560181, C09K 1520, C09K 1532, C07C 6973

Patent

active

047387963

ABSTRACT:
Process for the heat stabilization of alkyl alkoxyalkylidenemalonates in the presence of Lewis acids, such as metal catalytic compounds employed as catalysts during the preparation of the alkyl alkoxyalkylidenemalonates by condensation of a suitable malonate with a suitable ortho ester. The condensation reaction mixture is heated in the presence of a stabilizing compound selected from the group consisting of 8-hydroxyquinolines and organic acid phosphates in an amount sufficient to stabilize the alkyl alkoxyalkylidenemalonates against thermal decomposition.

REFERENCES:
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patent: 2824121 (1958-02-01), Nicholl et al.
patent: 3118949 (1964-01-01), Cull et al.
patent: 3376232 (1968-04-01), Coover, Jr. et al.
patent: 3489722 (1970-01-01), Kotani et al.
patent: 4058553 (1977-11-01), Ackermann et al.
patent: 4665218 (1987-05-01), Englaender et al.
Sah, Condensation of Ortho Esters with Acetoacetic Ester and Malonic Ester, J. Am. Chem. Soc., 53, 1836 (1931).
Post and Erickson, The Reactions of Ortho Esters with Certain Acid Anhydrides, J. Org. Chem. 2, 260 (1937).
Fuson, Parham and Reed, Alkylation of Ethyl Malonate with Diethoxymethyl Acetates, J. Org. Chem. 11, 194 (1946).

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