Title:
PRODUCTION METHOD OF 1-ALKYL-5-HYDROXYPYRAZOLE
Document Type and Number:
Japanese Patent JP2022184396
Kind Code:
A
Abstract:
To provide a novel industrial production method of 1-alkyl-5-hydroxypyrazole obtained easily, with high yield and with high purity by using a raw material acquired easier than in conventional methods.SOLUTION: The invention relates to a production method with which 1-alkyl-5-hydroxypyrazole can be easily obtained by making a dialkylaminoacrylic acid ester and an alkyl hydrazine react with each other as shown by the reaction equation A (in the equation, each of R1, R2 and R3 is mutually independently a 1-6C alkyl group, R4 is a hydrogen atom, a 1-6C alkyl group, a 2-6C alkenyl group, a 3-6C cycloalkyl group or an aryl group, and these groups may be substituted with a halogen, a hydroxy group, an alkoxy group or a 1-6C alkyl group).SELECTED DRAWING: None
Inventors:
KONISHI RYOTA
KAMIMURA SADAO
YAMADA YUTAKA
KAMIMURA SADAO
YAMADA YUTAKA
Application Number:
JP2021092213A
Publication Date:
December 13, 2022
Filing Date:
June 01, 2021
Export Citation:
Assignee:
JAPAN FINECHEM CO INC
International Classes:
C07D231/20
Attorney, Agent or Firm:
Patent Attorney Corporation Otani Patent Office