JPS54151969A - Preparation of 1,3-dimethyl-4-(2,4-dichlorobenzoyl)-5- pyrazolyl 4-toluenesulfonate - Google Patents

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

Info

Publication number
JPS54151969A
JPS54151969A JP5999378A JP5999378A JPS54151969A JP S54151969 A JPS54151969 A JP S54151969A JP 5999378 A JP5999378 A JP 5999378A JP 5999378 A JP5999378 A JP 5999378A JP S54151969 A JPS54151969 A JP S54151969A
Authority
JP
Japan
Prior art keywords
dimethyl
formula
compound
dichlorobenzoyl
toluenesulfonate
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
JP5999378A
Other languages
Japanese (ja)
Other versions
JPS5917114B2 (en
Inventor
Shigeki Nagai
Mitsuaki Takenaka
Minoru Nishimura
Masanori Watanabe
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 JP53059993A priority Critical patent/JPS5917114B2/en
Publication of JPS54151969A publication Critical patent/JPS54151969A/en
Publication of JPS5917114B2 publication Critical patent/JPS5917114B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: The continuous production of title compound, which is useful as a herbicide, is carried out in high yield by 2-step processes with one reaction system consisting of 1,3-dimethyl-5-pyrazolone, a solvent of an alcohol of 4 or more carbon atoms and a base of alkali metal carbonate.
CONSTITUTION: The reaction between 1,3-dimethyl-5-pyrazolone of formula I and a compound of formula II is conducted in the presence of an alkali metal carbonate, especially potassium carbonate is effective, in an amount of 1 mole or more per mol of the compound of formula I, preferably 1W4 moles in an alcohol of 4 or more carbon atoms, especially tert.-butanol is effective (the first step). The reaction products, that is the compound of formula III, without isolation and purification, is made to react with a compound of formula IV by directly adding it, thus producing 1,3-dimethyl-4-(2,4-dichlorobenzoyl)-5-pyrazolyl 4-toluenesulfonate (the second step).
COPYRIGHT: (C)1979,JPO&Japio
JP53059993A 1978-05-22 1978-05-22 Process for producing 1,3-dimethyl-4-(2,4-dichlorobenzoyl)-5-pyrazolyl 4-toluenesulfonate Expired JPS5917114B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53059993A JPS5917114B2 (en) 1978-05-22 1978-05-22 Process for producing 1,3-dimethyl-4-(2,4-dichlorobenzoyl)-5-pyrazolyl 4-toluenesulfonate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53059993A JPS5917114B2 (en) 1978-05-22 1978-05-22 Process for producing 1,3-dimethyl-4-(2,4-dichlorobenzoyl)-5-pyrazolyl 4-toluenesulfonate

Publications (2)

Publication Number Publication Date
JPS54151969A true JPS54151969A (en) 1979-11-29
JPS5917114B2 JPS5917114B2 (en) 1984-04-19

Family

ID=13129192

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53059993A Expired JPS5917114B2 (en) 1978-05-22 1978-05-22 Process for producing 1,3-dimethyl-4-(2,4-dichlorobenzoyl)-5-pyrazolyl 4-toluenesulfonate

Country Status (1)

Country Link
JP (1) JPS5917114B2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5029477A (en) * 1973-03-09 1975-03-25
JPS50126830A (en) * 1974-03-28 1975-10-06
JPS52268A (en) * 1975-06-13 1977-01-05 Bayer Ag Production of pyrazole * pharmaceutical agent and composition

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5029477A (en) * 1973-03-09 1975-03-25
JPS50126830A (en) * 1974-03-28 1975-10-06
JPS52268A (en) * 1975-06-13 1977-01-05 Bayer Ag Production of pyrazole * pharmaceutical agent and composition

Also Published As

Publication number Publication date
JPS5917114B2 (en) 1984-04-19

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