JPS5594368A - Preparation of 1,3-dimethyl-4-(2,4-dichlorobenzoyl)-5- pyrazolyl4-toluenesulfonate - Google Patents

Preparation of 1,3-dimethyl-4-(2,4-dichlorobenzoyl)-5- pyrazolyl4-toluenesulfonate

Info

Publication number
JPS5594368A
JPS5594368A JP15497378A JP15497378A JPS5594368A JP S5594368 A JPS5594368 A JP S5594368A JP 15497378 A JP15497378 A JP 15497378A JP 15497378 A JP15497378 A JP 15497378A JP S5594368 A JPS5594368 A JP S5594368A
Authority
JP
Japan
Prior art keywords
dichlorobenzoyl
dimethyl
water
hydroxypyrazole
inorganic base
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.)
Granted
Application number
JP15497378A
Other languages
Japanese (ja)
Other versions
JPS6155504B2 (en
Inventor
Masataka Wataya
Shinji Nishimura
Hideo Maeda
Kikuo Otomo
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.)
Hodogaya Chemical Co Ltd
Sankyo Co Ltd
Original Assignee
Hodogaya Chemical Co Ltd
Sankyo Co 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 Hodogaya Chemical Co Ltd, Sankyo Co Ltd filed Critical Hodogaya Chemical Co Ltd
Priority to JP15497378A priority Critical patent/JPS5594368A/en
Publication of JPS5594368A publication Critical patent/JPS5594368A/en
Publication of JPS6155504B2 publication Critical patent/JPS6155504B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To obtain the title substance useful as herbicides in high yield, by reacting 1,3-dimethyl-4-(2,4-dichlorobenzoyl)-5-hydroxypyrazole with a tosylating agent in a heterogeneous mixture of an inert solvent and water in the presence of an inorganic base as deacidification agent.
CONSTITUTION: 1,3-Dimethyl-4-(2,4-dichlorobenzoyl)-5-hydroxypyrazole is reacted with 4-toluenesulfonyl chloride or bromide in a heterogeneous mixture of an inert solvent, e.g. benzene, which is immiscible with water and inert to the reaction, and water in the presence of an inorganic base, e.g. an alkali metal hydroxide, as a deacidification agent to give the title substance. The use of a quaternary ammonium salt of the formula (R1, R2, R3 and R4 are alkyl groups, etc.; X is OH, halogen, etc.) as a catalyst further improves the yield remarkably.
COPYRIGHT: (C)1980,JPO&Japio
JP15497378A 1978-12-18 1978-12-18 Preparation of 1,3-dimethyl-4-(2,4-dichlorobenzoyl)-5- pyrazolyl4-toluenesulfonate Granted JPS5594368A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15497378A JPS5594368A (en) 1978-12-18 1978-12-18 Preparation of 1,3-dimethyl-4-(2,4-dichlorobenzoyl)-5- pyrazolyl4-toluenesulfonate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15497378A JPS5594368A (en) 1978-12-18 1978-12-18 Preparation of 1,3-dimethyl-4-(2,4-dichlorobenzoyl)-5- pyrazolyl4-toluenesulfonate

Publications (2)

Publication Number Publication Date
JPS5594368A true JPS5594368A (en) 1980-07-17
JPS6155504B2 JPS6155504B2 (en) 1986-11-28

Family

ID=15595921

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15497378A Granted JPS5594368A (en) 1978-12-18 1978-12-18 Preparation of 1,3-dimethyl-4-(2,4-dichlorobenzoyl)-5- pyrazolyl4-toluenesulfonate

Country Status (1)

Country Link
JP (1) JPS5594368A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57167971A (en) * 1981-04-09 1982-10-16 Ishihara Sangyo Kaisha Ltd Preparation of 1,3-dimethyl-4-(2,4-dichlorobenzoyl)-5- substituted carbonylmethoxypyrazole

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57167971A (en) * 1981-04-09 1982-10-16 Ishihara Sangyo Kaisha Ltd Preparation of 1,3-dimethyl-4-(2,4-dichlorobenzoyl)-5- substituted carbonylmethoxypyrazole

Also Published As

Publication number Publication date
JPS6155504B2 (en) 1986-11-28

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