JPS55108856A - Preparation of 1-alkyl-3-methyl-5-pyrazolone - Google Patents

Preparation of 1-alkyl-3-methyl-5-pyrazolone

Info

Publication number
JPS55108856A
JPS55108856A JP1499779A JP1499779A JPS55108856A JP S55108856 A JPS55108856 A JP S55108856A JP 1499779 A JP1499779 A JP 1499779A JP 1499779 A JP1499779 A JP 1499779A JP S55108856 A JPS55108856 A JP S55108856A
Authority
JP
Japan
Prior art keywords
methyl
alcohol
formula
alkyl
phrazolone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP1499779A
Other languages
Japanese (ja)
Inventor
Shinichi Furusaki
Hisao Yamashina
Koji Ishichi
Toru Hiratsuka
Kouji Sataka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ube Corp
Original Assignee
Ube Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ube Industries Ltd filed Critical Ube Industries Ltd
Priority to JP1499779A priority Critical patent/JPS55108856A/en
Publication of JPS55108856A publication Critical patent/JPS55108856A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To simplfy the production process, to improve the yield and purity, and to obtain the title compound useful as an intermediate for the synthesis of agricultural chemicals, medicines, and dyes, by reacting 3-methyl-5-phrazolone with an alcohol in the presence of a mineral acid as a catalyst.
CONSTITUTION: One mole of 3-methyl-5-phrazolone of formula I is reacted with an alcohol of the formula R-OH (R is alkyl or cycloalkyl group) in the presence of 0.1mol or more of a mineral acid, preferably sulfuric acid, or p-toluenesulfonic acid with or without a solvent at 80W300° under atmospheric pressure to give the desired compound of formula II. The alcohol is preferably used in a stoichiometric amount or more due to its solvent action.
EFFECT: Inexpensive and available raw materials permit a low production cost.
COPYRIGHT: (C)1980,JPO&Japio
JP1499779A 1979-02-14 1979-02-14 Preparation of 1-alkyl-3-methyl-5-pyrazolone Pending JPS55108856A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1499779A JPS55108856A (en) 1979-02-14 1979-02-14 Preparation of 1-alkyl-3-methyl-5-pyrazolone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1499779A JPS55108856A (en) 1979-02-14 1979-02-14 Preparation of 1-alkyl-3-methyl-5-pyrazolone

Publications (1)

Publication Number Publication Date
JPS55108856A true JPS55108856A (en) 1980-08-21

Family

ID=11876560

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1499779A Pending JPS55108856A (en) 1979-02-14 1979-02-14 Preparation of 1-alkyl-3-methyl-5-pyrazolone

Country Status (1)

Country Link
JP (1) JPS55108856A (en)

Similar Documents

Publication Publication Date Title
JPS55108856A (en) Preparation of 1-alkyl-3-methyl-5-pyrazolone
JPS5695142A (en) Preparation of aliphatic aldehyde
JPS56147763A (en) Preparation of mercaptopropionic ester and thiodipropionic ester
JPS54144320A (en) Preparation of ureidomethylene malonic ester
JPS55143960A (en) Novel acetal compound and its preparation
JPS5663953A (en) Novel preparation of n- 1-ethyl-2-pyrrolidinylmethyl -2- methoxy-5-sulfamoylbenzamide
JPS5758645A (en) Preparation of carbonate
JPS5756440A (en) Preparation of 2-hydroxynaphthalene-3-carboxylic acid
SU1477729A1 (en) Method of producing 4-hydroxy-8-carboxyquinolone-2
JPS57165341A (en) Preparation of pivaloyl chloride and benzoyl chloride
JPS5430144A (en) Preparation of isocamphane
JPS5626887A (en) Preparation of 5-benzyl-3-furancarboxylic acid ester
JPS565458A (en) Preparation of 1-ethyl-2- 2-methoxy-5- sulfamoylbenzamidemethyl pyrrolidine
JPS55143925A (en) Preparation of cyclopentenolone
JPS55104271A (en) Preparation of uracil-5-carboxylic ester
JPS552638A (en) Cyanopyrazinecarboxylic ester and its preparation
JPS57209265A (en) Preparation of di-lower alkyl ester of naphthalenedisulfonic acid
JPS5535066A (en) Novel pyrazole derivative
JPS55129242A (en) Preparation of alpha,alpha,alpha-trifluoro-o-toluoyl fluoride
JPS5536431A (en) Preparation of farnesylacetic acid
JPS55111459A (en) Preparation of cysteamine
JPS5527113A (en) Preparation of dihydrocoenzyme q compound
JPS54148773A (en) Preparation of phthalide
JPS5640638A (en) Preparation of pyruvic acid
JPS5770865A (en) Preparation of 5-aroylpyrrole-2-acetic acid derivative