RO99496B1 - Process for preparing pyrrazolsulphonamide derivatives - Google Patents

Process for preparing pyrrazolsulphonamide derivatives

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Publication number
RO99496B1
RO99496B1 RO130948A RO13094886A RO99496B1 RO 99496 B1 RO99496 B1 RO 99496B1 RO 130948 A RO130948 A RO 130948A RO 13094886 A RO13094886 A RO 13094886A RO 99496 B1 RO99496 B1 RO 99496B1
Authority
RO
Romania
Prior art keywords
derivatives
general formula
pyrrazolsulphonamide
preparing
defined above
Prior art date
Application number
RO130948A
Other languages
Romanian (ro)
Inventor
Yamamoto Susumu
Kakuta Takuya
Sato Toshiaki
Morimoto Katsushi
Oya Eiichi
Ikai Takasi
Nawamaki Tsutomu
Original Assignee
Nissan Chemical Industries Limited Tokio
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 Nissan Chemical Industries Limited Tokio filed Critical Nissan Chemical Industries Limited Tokio
Priority to RO130948A priority Critical patent/RO99496B1/en
Publication of RO99496B1 publication Critical patent/RO99496B1/en

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Abstract

Inventia se refera la un procedeu pentru prepararea unor derivati de pirazolsulfonamida cu formula generala I: (formula generala I) în care R reprezinta un atom de hidrogen sau o grupa alchil cu 1 - 4 atomi de carbon, R indice 1 reprezinta un radical alchil cu 1 - 4 atomi de carbon si Y si X sunt atomi de halogen, grupe alchil sau alcoxi inferiori. Procedeul consta în aceea ca se trateaza un derivat de carbamat de pirazolsulfonil cu formula generala II: (formula generala II) în care R si R indice 1 au semnificatiile de mai sus si R indice 2 este un radical alchil inferior, cu un compus cu formula III: (formula III) în care X si Y au semnificatiile de mai sus, reactia având loc în toluen la temperatura de reflux.The invention relates to a process for the preparation of pyrazolesulfonamide derivatives of the general formula I: (general formula I) wherein R represents a hydrogen atom or a C1-4 alkyl group, R represents an alkyl radical with 1-4 carbon atoms and Y and X are halogen atoms, lower alkyl or lower alkoxy groups. The process consists in treating a pyrazol-sulfonyl carbamate derivative of general formula II: (wherein R and R are as defined above) and R is a lower alkyl radical with a compound of formula III: wherein X and Y are as defined above, the reaction being carried out in toluene at reflux temperature.

RO130948A 1986-01-17 1986-01-17 Process for preparing pyrrazolsulphonamide derivatives RO99496B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO130948A RO99496B1 (en) 1986-01-17 1986-01-17 Process for preparing pyrrazolsulphonamide derivatives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO130948A RO99496B1 (en) 1986-01-17 1986-01-17 Process for preparing pyrrazolsulphonamide derivatives

Publications (1)

Publication Number Publication Date
RO99496B1 true RO99496B1 (en) 1990-08-30

Family

ID=40907557

Family Applications (1)

Application Number Title Priority Date Filing Date
RO130948A RO99496B1 (en) 1986-01-17 1986-01-17 Process for preparing pyrrazolsulphonamide derivatives

Country Status (1)

Country Link
RO (1) RO99496B1 (en)

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