Beta ketoester compositions and method of manufacture

Details Beta ketoester compositions and method of manufacture Beta ketoester compositions and method of manufacture

1998-02-17

1999-10-12

Geist, Gary

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

Organic compounds

Carboxylic acid esters

C07C 6974

Patent

active

059657677

ABSTRACT:
A method for making beta ketoesters of alcoholic actives, especially perfume alcohols, by a two step process involving a first diketene reaction step and a second carboxylic acid halide reaction step. The present invention also relates to mixtures of beta ketoesters of such alcoholic actives, especially those prepared by the present manufacturing process.

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patent: 5183929 (1993-02-01), Naito et al.
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patent: 5294731 (1994-03-01), Paust et al.
patent: 5453534 (1995-09-01), Eller
patent: 5492690 (1996-02-01), Bush
"The Ester Enolate Carroll Rearrangement", by Wilson et al., J. Org Chem 1984, 49, pp. 722-725.
"The rearrangement of Allyl-Type Esters of .beta.-Keto Acids", Kimel et al., J. Am. Chem. Soc., Oct. 1943, vol. 65, pp. 1992-1998.

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