Methylamine → 1H-Pyrazole-4-carboxamide, 5-cyano-1-(2,4-dichlorophenyl)-N-methyl-
反応式
[C:1]([C:3]1[N:7]([C:8]2[CH:13]=[CH:12][C:11]([Cl:14])=[CH:10][C:9]=2[Cl:15])[N:6]=[CH:5][C:4]=1[C:16]([O:18]CC)=O)#[N:2].[CH3:21][NH2:22]>CN(C=O)C>[C:1]([C:3]1[N:7]([C:8]2[CH:13]=[CH:12][C:11]([Cl:14])=[CH:10][C:9]=2[Cl:15])[N:6]=[CH:5][C:4]=1[C:16]([NH:22][CH3:21])=[O:18])#[N:2]参加物
4
実験手順
To a solution of 2.5 g of 5-cyano-1-(2,4-dichlorophenyl)-1H-pyrazole-4-carboxylic acid, ethyl ester in 20 ml of DMF was added 20 ml of 40% aqueous monomethylamine. The reaction mixture was stirred at room temperature for approximately two and one-half hours whereupon the solution was poured into ice water. The precipitate was collected by filtration and recrystallized from methanol/water to afford 1.3 g of 5-cyano-1-(2,4-dichlorophenyl)-N-methyl-1H-pyrazole-4-carboxamide. mp=182°-183° C.