p-Phenylbenzhydrazide → 3-biphenyl-4-yl-4-(2-fluorophenyl)-5-isopropyl-4H-1,2,4-triazole

HRID 6921노트

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HRID 6921 반응식
CS[C:3](=[N:7][C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][C:9]=1[F:14])[CH:4]([CH3:6])[CH3:5].[C:15]1([C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)[CH:20]=[CH:19][C:18]([C:21]([NH:23][NH2:24])=O)=[CH:17][CH:16]=1>CN(C)C=O>[C:15]1([C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)[CH:20]=[CH:19][C:18]([C:21]2[N:7]([C:8]3[CH:13]=[CH:12][CH:11]=[CH:10][C:9]=3[F:14])[C:3]([CH:4]([CH3:6])[CH3:5])=[N:24][N:23]=2)=[CH:17][CH:16]=1

참가 물질

4

반응물 2

HCID 72718p-PhenylbenzhydrazideHCID 22019263N-(2-Fluorophenyl)-2-methylthiopropionimidate methyl ester

생성물 1

HCID 220192343-biphenyl-4-yl-4-(2-fluorophenyl)-5-isopropyl-4H-1,2,4-triazole수율 68%

시약·촉매·용매 1

HCID 6228Dimethylformamide용매

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온도
120 °C

실험 절차

N-(2-Fluorophenyl)-2-methylthiopropionimidate methyl ester (7.84 g) prepared in the Reference Example 1 and biphenyl-4-carboxylic acid hydrazide (5.25 g) were dissolved in N,N-dimethylformamide (50 ml), followed by addition of p-toluenesulfonic acid·monohydrate (941 mg), and stirred at 120° C. for 59 hours. After the reaction solution was cooled to ambient temperature, the resulting solution was concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography (eluent: chloroform-chloroform/methanol=100/1 to 50/1 to 20/1), to afford 3-biphenyl-4-yl-4-(2-fluorophenyl)-5-isopropyl-4H-1,2,4-triazole as pale yellow solid (5.98g, 68%). A part of the product was recrystallized from ethyl acetate, to afford the entitled compound as pale yellow crystal. The physico-chemical values are as follows.

후처리

  1. temperatureAfter the reaction solution was cooled to ambient temperature
  2. concentrationthe resulting solution was concentrated under reduced pressure
  3. customThe resulting residue was purified by silica gel column chromatography (eluent: chloroform-chloroform/methanol=100/1 to 50/1 to 20/1)

출처 및 근거

ORD 기록
ord-e046a0d0a6494d69abb5d050df00025d
출처 데이터셋
uspto-grants-2006_08
특허 번호
US07084164B2

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