NEW PREPARATION METHOD OF TETRAHYDROOALPHAAPYRON DERIVATIVES

Title:

NEW PREPARATION METHOD OF TETRAHYDROOALPHAAPYRON DERIVATIVES

Document Type and Number:

Japanese Patent JPS52274

Kind Code:

A

Abstract:

A process for the preparation of tetrahydro-alpha-pyrones comprises preparing the alkyl ester of a 5-oxo alkanoic acid from a 4-oxo alkane carbonitrile, obtained in a first stage by the action of benzyl cyanide on the corresponding alkenone, and then saponifying the obtained ester, followed by hydrogenation and cyclization.

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Inventors:

PIEERU SHIMON

Application Number:

JP6865576A

Publication Date:

January 05, 1977

Filing Date:

June 10, 1976

Export Citation:

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Assignee:

UNION SHIMIKU CONTINENTALYUU S

International Classes:

C07D309/30; C07C57/38; C07C59/48; C07C59/84; C07C69/716; C07D315/00; (IPC1-7): C07D309/30

Next Patent: JPH052275