RO92812B - Process for preparing 1-aryl-4-substituted 1,4-dihydro-5-h-tetrazole-5-one - Google Patents

Process for preparing 1-aryl-4-substituted 1,4-dihydro-5-h-tetrazole-5-one

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Publication number
RO92812B
RO92812B RO119301A RO11930185A RO92812B RO 92812 B RO92812 B RO 92812B RO 119301 A RO119301 A RO 119301A RO 11930185 A RO11930185 A RO 11930185A RO 92812 B RO92812 B RO 92812B
Authority
RO
Romania
Prior art keywords
alkyl
substituted
general formula
tetrazole
dihydro
Prior art date
Application number
RO119301A
Other languages
Romanian (ro)
Other versions
RO92812A (en
Inventor
Theodoridis George
Original Assignee
Fmc Corporation
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 Fmc Corporation filed Critical Fmc Corporation
Priority to RO119301A priority Critical patent/RO92812B/en
Publication of RO92812A publication Critical patent/RO92812A/en
Publication of RO92812B publication Critical patent/RO92812B/en

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Abstract

Inventia se refera la un procedeu pentru prepararea unor 1,4-dihidro-5H-tetrazol-one-1-aril-4-substituite cu formula generala I : (vezi formula) în care R este alchil cu 1 la 6 atomi de carbon, eventual substituit cu atomi de halogen sau alchenil cu3la 6 atomi de carbon, X1 este clor, X2 este clor sau brom si Z este QR în care Q este o sau NH, R este alchil (H sau CH3)COO, alchil sau alchenil cu 3 la 6 atomi de carbon în care alchilul poate fi substituit cu halogen, alcoxi, alchilitio, alchilsu lfinil, alchilsulfonic sau ciano. Procedeul consta în aceea ca un compus cu formula generala II : (vezi formula) în care X1 si X2 si Z au semnificatiile de mai sus se trateaza cu compusi cu formula generala III: (vezi formula) în care R are semnificatiile de mai sus si Hal este un atom de halogen, reactia avand loc în prezenta hidrurii de sodiu sau a carbonatului de potasiu în mediu de dimetil-formamida, dimetilsulfoxid sau acetona la temperaturi între temperatura camerei si temperatura de reflux.The invention relates to a process for the preparation of 1,4-dihydro-5H-tetrazole-one-1-aryl-4-substituted compounds of general formula I wherein R is alkyl of 1 to 6 carbon atoms, and X is chlorine or bromine, and Z is QR wherein Q is O or NH, R is alkyl (H or CH 3) COO, alkyl or alkenyl with 3 to 6 carbon atoms wherein the alkyl may be substituted with halogen, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonic or cyano. The process consists in that a compound of general formula II wherein X 1 and X 2 and Z are as defined above is treated with compounds of general formula III wherein R is as defined above and Hal is a halogen atom, the reaction being carried out in the presence of sodium hydride or potassium carbonate in dimethylformamide, dimethylsulfoxide or acetone at temperatures between room temperature and reflux temperature.

RO119301A 1985-06-25 1985-06-25 Process for preparing 1-aryl-4-substituted 1,4-dihydro-5-h-tetrazole-5-one RO92812B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO119301A RO92812B (en) 1985-06-25 1985-06-25 Process for preparing 1-aryl-4-substituted 1,4-dihydro-5-h-tetrazole-5-one

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO119301A RO92812B (en) 1985-06-25 1985-06-25 Process for preparing 1-aryl-4-substituted 1,4-dihydro-5-h-tetrazole-5-one

Publications (2)

Publication Number Publication Date
RO92812A RO92812A (en) 1987-11-30
RO92812B true RO92812B (en) 1987-12-01

Family

ID=20117495

Family Applications (1)

Application Number Title Priority Date Filing Date
RO119301A RO92812B (en) 1985-06-25 1985-06-25 Process for preparing 1-aryl-4-substituted 1,4-dihydro-5-h-tetrazole-5-one

Country Status (1)

Country Link
RO (1) RO92812B (en)

Also Published As

Publication number Publication date
RO92812A (en) 1987-11-30

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