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Tributylamine → ethyl alpha-acetyl-2-chloro-5-[4-(difluoromethyl)-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazol-1-yl]-4-fluorobenzenepropanoate

HRID 1387688
ノート
印刷プレビュー

反応式

HRID 1387688 の反応式
[Cl:1][C:2]1[C:7](I)=[CH:6][C:5]([N:9]2[C:13](=[O:14])[N:12]([CH:15]([F:17])[F:16])[C:11]([CH3:18])=[N:10]2)=[C:4]([F:19])[CH:3]=1.[OH:20][CH:21]([CH3:29])[C:22](=[CH2:28])[C:23]([O:25][CH2:26][CH3:27])=[O:24].C(N(CCCC)CCCC)CCC.N1C=CN=N1>C1C=CC(C#N)=CC=1.C1C=CC(C#N)=CC=1.Cl[Pd]Cl.C(OCC)C>[C:21]([CH:22]([CH2:28][C:7]1[CH:6]=[C:5]([N:9]2[C:13](=[O:14])[N:12]([CH:15]([F:17])[F:16])[C:11]([CH3:18])=[N:10]2)[C:4]([F:19])=[CH:3][C:2]=1[Cl:1])[C:23]([O:25][CH2:26][CH3:27])=[O:24])(=[O:20])[CH3:29]
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

7

反応物 4

HCID 7622TributylamineHCID 10855587Butanoic acid, 3-hydroxy-2-methylene-, ethyl esterHCID 155100251-(4-chloro-2-fluoro-5-iodophenyl)-4-difluoromethyl-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazoleHCID 178418936HCID 178418936、化合物

生成物 1

HCID 21255956ethyl alpha-acetyl-2-chloro-5-[4-(difluoromethyl)-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazol-1-yl]-4-fluorobenzenepropanoate
収率 103.7%

試薬・触媒・溶媒 2

HCID 498840Bis(benzonitrile)palladium chloride触媒HCID 3283Diethyl Ether溶媒

反応条件

温度
130 °C

実験手順

To a 50 mL roundbottom flask equipped with a mechanical stirrer and a thermometer were added 8.12 grams (0.02 mole—1.0 equiv.) of 1-(4-chloro-2-fluoro-5-iodophenyl)-4-difluoromethyl-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazole, 2.88 grams (0.02 mole—1.0 equiv.) of ethyl 3-hydroxy-2-methylenebutanoate, 7.4 grams (0.04 mole—2.0 equiv.) of tributylamine, and 0.077 gram (0.0002 mole—0.01 equiv.) of bis(benzonitrile)dichloropalladium(II). The reaction mixture was heated to 130° C., where it stirred for two hours. After this time TLC analysis of the reaction mixture indicated 100% conversion of the triazole starting material. To the reaction mixture was then added 50 mL of diethyl ether. The resulting mixture was washed with 6M sulfuric acid, water, and an aqueous saturated sodium chloride solution and then concentrated, yielding 8.7 grams of 75.5% pure ethyl α-acetyl-2-chloro-5-[4-(difluoromethyl)-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazol-1-yl]-4-fluorobenzenepropanoate (84.9% yield). The 75.5% pure product was distilled at 200 ° C. and 0.01 mm of mercury, yielding 6.0 grams of 95.5% pure ethyl α-acetyl-2-chloro-5-[4-(difluoromethyl)-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazol-1-yl]-4-fluorobenzenepropanoate.

後処理

  1. customTo a 50 mL roundbottom flask equipped with a mechanical stirrer
  2. washThe resulting mixture was washed with 6M sulfuric acid, water
  3. concentrationan aqueous saturated sodium chloride solution and then concentrated

出典と根拠

ORDレコード
ord-6c40d94439804bfa8948b3ebe40e599e
出典データセット
uspto-grants-2001_07
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US06268506B1

反応ノート

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