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Water → 1H-Pyrazole-4-carboxamide, 5-cyano-N-methyl-1-phenyl-

HRID 279951
ノート
印刷プレビュー

反応式

HRID 279951 の反応式
[C-:1]#[N:2].[Na+].Cl[C:5]1[N:9]([C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)[N:8]=[CH:7][C:6]=1[C:16]([O:18]CC)=O.[CH3:21][NH2:22].O>CN(C=O)C>[C:1]([C:5]1[N:9]([C:10]2[CH:11]=[CH:12][CH:13]=[CH:14][CH:15]=2)[N:8]=[CH:7][C:6]=1[C:16]([NH:22][CH3:21])=[O:18])#[N:2]
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

6

反応物 4

HCID 962WaterHCID 6329MethylamineHCID 8929Sodium CyanideHCID 13608341Ethyl 5-chloro-1-phenyl-1H-pyrazole-4-carboxylate

生成物 1

HCID 1636751H-Pyrazole-4-carboxamide, 5-cyano-N-methyl-1-phenyl-収率 76.4%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide
溶媒

反応条件

温度
100 °C

実験手順

Four and seven tenths grams (0.096 mol) of sodium cyanide were added to a solution of 12.0 g (0.048 mol) of 94.66% pure 5-chloro-1-phenyl-1H-pyrazole-4-carboxylic acid, ethyl ester in 28.8 ml of DMF at room temperature. The solution was heated for 6 hours at 100° C. and cooled to room temperature. The reaction mixture was stirred overnight and 13.0 g (0.17 mol) of 40% aqueous methylamine was added dropwise. The resulting mixture was stirred for 6 hours at room temperature and 28.8 ml of water was slowly added. The mixture was stirred for 10 minutes and the precipitated solid was collected by filtration. This solid was washed with water and vacuum dried to provide 8.3 g of 5-cyano-1-phenyl-N-methyl-1H-pyrazole-4-carboxamide as a white solid. The product analyzed 95.81% pure by high pressure liquid chromatography, corresponding to a corrected yield of 77.4% product.

後処理

  1. temperaturecooled to room temperature
  2. stirringThe resulting mixture was stirred for 6 hours at room temperature
  3. stirringThe mixture was stirred for 10 minutes
  4. filtrationthe precipitated solid was collected by filtration
  5. washThis solid was washed with water and vacuum
  6. customdried

出典と根拠

ORDレコード
ord-91491d9b2e5a45b19a5ea7cbc225c8e3
出典データセット
uspto-grants-1986_05
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US04587348

反応ノート

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