PROCESS FOR PREPARING TETRAKIS (3-(3,5-DI-tert-BUTYL-4-HYDROXYPHENYL)PROPIONYLOXYMETHYL)METHANE

Title:

PROCESS FOR PREPARING TETRAKIS (3-(3,5-DI-tert-BUTYL-4-HYDROXYPHENYL)PROPIONYLOXYMETHYL)METHANE

Document Type and Number:

WIPO Patent Application WO/1988/005773

Kind Code:

A1

Abstract:

A process for preparing tetrakis (3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyloxymethyl)methane by conducting an ester-exchange reaction of an alkyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate with pentaerythritol in the presence of a basic catalyst, which comprises conducting the reaction in the presence of bis (2,2,2-tris(hydroxymethyl)ethoxy)-methane. This process enables highly pure tetrakis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyloxymethyl)methane to be prepared in a good yield without the necessity of using a large amount of expensive alkyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate while yielding a reduced amount of by-products.

Inventors:

GOHBAYASHI MASAYOSHI (JP)
NARITA NORITSUGU (JP)
MARUNO MAKOTO (JP)

Application Number:

PCT/JP1988/000088

Publication Date:

August 11, 1988

Filing Date:

February 01, 1988

Export Citation:

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Assignee:

YOSHITOMI PHARMACEUTICAL (JP)

International Classes:

C07B61/00; B01J31/02; C07C67/03; C07C69/732; (IPC1-7): C07C69/732; C07C67/03

Foreign References:

JPH05612342A

Other References: