22863-24-7Relevant articles and documents
Preparation method of 1-(2,4-dichlorophenyl)-4-difluoromethyl-3-methyl-1H-1,2,4-triazole-5-one
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, (2020/10/04)
The invention provides a preparation method of 1-(2,4-dichlorophenyl)-4-difluoromethyl-3-methyl-1H-1,2,4-triazole-5-one. The method comprises the steps: taking aniline as a raw material; reducing witha catalyst X to prepare phenylhydrazine; under the action of acetaldehyde and sodium cyanate, carrying out cyclization on phenylhydrazine to generate 1-phenyl-3-methyl-1H-1,2,4-triazole-5-one; carrying out a reaction on 1-phenyl-3-methyl-1H-1,2,4-triazole-5-one and monochlorodifluoromethane under the action of a catalyst Y to generate 1-phenyl-3-methyl-4-difluoromethyl-1H-1,2,4-triazole-5-one, and carrying out catalytic chlorination through a catalyst Z to prepare 1-(2,4-dichlorophenyl)-4-difluoromethyl-3-methyl-1H-1,2,4-triazole-5-one.
C5-Alkyl-1,3,4-Oxadiazol-2-ones Undergo Dealkylation upon Nitrogen Insertion to Form 2H-1,2,4-Triazol-3-ones: Synthesis of 1,2,4-Triazol-3-one Hybrids with Triazolothiadiazoles and Triazolothiadiazines
Kattimani, Pramod P.,Kamble, Ravindra R.,Dorababu, Atukuri,Hunnur, Raveendra K.,Kamble, Atulkumar A.,Devarajegowda
, p. 2258 - 2265 (2017/07/25)
The present study emphasizes on the dealklylation of 3-aryl-5-alkyl-2-oxo-Δ4-1,3,4-oxadiazoles when reacted with formamide resulting in the formation of 2-aryl-2H-1,2,4-triazol-3(4H)-ones as major product. Subsequent reactions of 2-aryl-2H-1,2,
Method of preparing aryl triazolinones with trialkyl orthoacetates
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, (2008/06/13)
A method for preparing an alkoxyethylidene-substituted aryl hydrazine having the formula STR1 and thereafter cyclizing the same with a cyanate salt under mildly acidic conditions in the presence of an organic solvent, optionally in the presence of a cycli