PRODUCTION OF ESTER COMPOUND - NIPPON OIL CO LTD

Title:

PRODUCTION OF ESTER COMPOUND

Document Type and Number:

Japanese Patent JPH10324665

Kind Code:

A

Abstract:

To provide a method for stably producing high-purity ester compounds even in the presence of a quinone as an impurity by the esterification of a polyphenol compound in the presence of a specific compound.

This ester compound is obtained by the esterification of a polyphenol compound with a 3-25C carboxylic acid compound in the presence of a reducing agent. Zinc or magnesium is used as the reducing agent, the former being more preferable, at a dosage of 0.001 to 30 mols per 100 g of the polyphenol compound. A tertiary amine can be optionally used, in order to enhance the effects of the reducing agent. Particularly preferable carboxylic acids are acid halides. The ester compound can be used as a discotic, liquid crystal compound useful as a liquid crystal material.

Inventors:

SATO YASUSHI
YUASA HITOSHI
NAKAMURA TORU
KOMATSU SHINICHI

Application Number:

JP14849897A

Publication Date:

December 08, 1998

Filing Date:

May 23, 1997

Export Citation:

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Assignee:

NIPPON OIL CO LTD

International Classes:

G02F1/13; C07B41/12; C07B61/00; C07C69/78; C09K19/32; (IPC1-7): C07C69/78; C07B41/12

Attorney, Agent or Firm:

Hideyo Okazawa (1 person outside)

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