Title:
OPTICALLY ACTIVE NITRIC ACID ESTER AND ITS PREPARATION
Document Type and Number:
Japanese Patent JPS59193852
Kind Code:
A
Abstract:
NEW MATERIAL:A nitric acid ester of formula I (R1 is H, lower alkyl; R2 is lower alkyl, lower alkenyl, lower alkinyl).
EXAMPLE: (R)-3-Methyl-4-nitroxy-2-(2-propinyl)-2-cyclopentene-1-one.
USE: It is useful as an intermediate of agricultural chemicals.
PREPARATION: The nitration of a cyclopentenolone of formula II gives the compound of formula I . As a nitration reagent, is used nitric acid, a mixture of nitric acid and acetic anhydride, nitronium tetrafluoroborate. The amount of the reagent used is an equimolar or excessive amount based on the cyclopentenolone. In the above nitration, a solvent such as dichloromethane or chloroform may be used. The reaction temperature is -40W+30°C, preferably -30°CW+5°C.
Inventors:
UMEMURA TAKEAKI
INOUE AYUMI
MITSUTA MASARU
INOUE AYUMI
MITSUTA MASARU
Application Number:
JP6956883A
Publication Date:
November 02, 1984
Filing Date:
April 19, 1983
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO
International Classes:
C07C203/08; C07C67/00; C07C201/00; C07C201/10; (IPC1-7): C07C77/02
Attorney, Agent or Firm:
Moroishi Mitsuhiro
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