Thionyl Chloride → 2-Ethyl-5-methyl-2H-pyrazole-3-carboxylic acid [4-(2-oxo-2,3-dihydro-1H-indole-5-carbonyl)-phenyl]-amide

HRID 2352767노트

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HRID 2352767 반응식
[CH2:1]([N:3]1[C:7]([C:8]([OH:10])=O)=[CH:6][C:5]([CH3:11])=[N:4]1)[CH3:2].S(Cl)(Cl)=O.[NH2:16][C:17]1[CH:34]=[CH:33][C:20]([C:21]([C:23]2[CH:24]=[C:25]3[C:29](=[CH:30][CH:31]=2)[NH:28][C:27](=[O:32])[CH2:26]3)=[O:22])=[CH:19][CH:18]=1>C1COCC1>[O:32]=[C:27]1[CH2:26][C:25]2[C:29](=[CH:30][CH:31]=[C:23]([C:21]([C:20]3[CH:33]=[CH:34][C:17]([NH:16][C:8]([C:7]4[N:3]([CH2:1][CH3:2])[N:4]=[C:5]([CH3:11])[CH:6]=4)=[O:10])=[CH:18][CH:19]=3)=[O:22])[CH:24]=2)[NH:28]1

참가 물질

5

반응물 3

HCID 24386Thionyl ChlorideHCID 27437941-Ethyl-3-methyl-1H-pyrazole-5-carboxylic acidHCID 644236235-(4-Amino-benzoyl)-1,3-dihydro-indol-2-one

생성물 1

HCID 866103732-Ethyl-5-methyl-2H-pyrazole-3-carboxylic acid [4-(2-oxo-2,3-dihydro-1H-indole-5-carbonyl)-phenyl]-amide수율 72.1%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

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온도
79 °C

실험 절차

A dry 25 mL flask was charged with 2-Ethyl-5-methyl-2H-pyrazole-3-carboxylic acid (0.608 mg, 3.53 mmol) and thionyl chloride (10 mL) and allowed to stir at 79° C. for 2 h. The thionyl chloride was then removed by distillation. The crude acid chloride was cooled to room temperature, and then dissolved in THF (5 mL). 5-(4-Amino-benzoyl)-1,3-dihydro-indol-2-one (0.685 g, 2.72 mmol) was added to the THF solution of the acid chloride, and the mixture was allowed to reflux for 2 h. The reaction mixture was then allowed to cool to room temperature. The room temperature reaction mixture was concentrated in vacuo, and the crude residue was dissolved in EtOH (5 mL). The ethanolic solution was treated with 1M NaOH(aq) (2 mL) and stirred for 30 min. The basic solution was acidified to a pH of 1 with 1M HCl(aq) yielding a tan precipitate. The tan solids were filtered to afford pure 2-Ethyl-5-methyl-2H-pyrazole-3-carboxylic acid [4-(2-oxo-2,3-dihydro-1H-indole-5-carbonyl)-phenyl]-amide (0.760 g, 1.96 mmol, 72%).

후처리

  1. customThe thionyl chloride was then removed by distillation
  2. temperatureThe crude acid chloride was cooled to room temperature
  3. dissolutiondissolved in THF (5 mL)
  4. temperatureto reflux for 2 h
  5. temperatureto cool to room temperature
  6. customThe room temperature reaction mixture
  7. concentrationwas concentrated in vacuo
  8. dissolutionthe crude residue was dissolved in EtOH (5 mL)
  9. additionThe ethanolic solution was treated with 1M NaOH(aq) (2 mL)
  10. stirringstirred for 30 min
  11. customyielding a tan precipitate
  12. filtrationThe tan solids were filtered

출처 및 근거

ORD 기록
ord-ce89fd24f46a4895b095d8539e1d9cc6
출처 데이터셋
uspto-grants-2010_07
특허 번호
US07749530B2

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