Nitrosobenzene → 5-(3-Amino-benzoyl)-1,3-dihydro-indol-2-one

HRID 2352755

반응식

HRID 2352755 반응식
[N+:1]([C:4]1[CH:5]=[C:6]([CH:19]=[CH:20][CH:21]=1)[C:7]([C:9]1[CH:10]=[C:11]2[C:15](=[CH:16][CH:17]=1)[NH:14][C:13](=[O:18])[CH2:12]2)=[O:8])([O-])=O.O=NC1C=CC=CC=1.CO.C(Cl)(Cl)Cl>CO.[Pd]>[NH2:1][C:4]1[CH:5]=[C:6]([CH:19]=[CH:20][CH:21]=1)[C:7]([C:9]1[CH:10]=[C:11]2[C:15](=[CH:16][CH:17]=1)[NH:14][C:13](=[O:18])[CH2:12]2)=[O:8]

참가 물질

6

반응물 3

HCID 11473NitrosobenzeneHCID 21584188Chloroform methanolHCID 686984765-(3-Nitro-benzoyl)-1,3-dihydro-indol-2-one

생성물 1

HCID 644240015-(3-Amino-benzoyl)-1,3-dihydro-indol-2-one

시약·촉매·용매 2

HCID 23938Palladium촉매HCID 887Methanol용매

실험 절차

5-(3-Nitro-benzoyl)-1,3-dihydro-indol-2-one (2.0 g, 7.09 mmol) was dissolved in MeOH (600 mL). 10% Pd/C (0.20 g) was added to the flask and then placed under vacuum to remove any O2(g). The reaction mixture was kept under reduced pressure for ˜5 min and was then charged with H2(g) at atmospheric pressure. This evacuation/H2(g) fill procedure was repeated twice. The reaction mixture was stirred for 2 h at which point the starting material had been completely consumed. As the desired ketone product was prone to over-reduction to the alcohol, stopping the reaction immediately upon complete consumption of the starting material limited the amount over-reduction that occurred. The reaction mixture was filtered over celite and the filtrate was concentrated in vacuo resulting in a solid that contained the desired keto-aniline product plus ˜5% of the overreduced alcohol-aniline. Flash silica gel chromatography (5% MeOH/CHCl3) of the crude solid provided pure 5-(3-Amino-benzoyl)-1,3-dihydro-indol-2-one in 72% (0.957 g, 3.80 mmol) yield.

후처리

  1. customto remove any O2(g)
  2. additionwas then charged with H2(g) at atmospheric pressure
  3. customhad been completely consumed
  4. customthe reaction
  5. customimmediately upon complete consumption of the starting material
  6. filtrationThe reaction mixture was filtered over celite
  7. concentrationthe filtrate was concentrated in vacuo
  8. customresulting in a solid

출처 및 근거

ORD 기록
ord-fb4d8b8f510d4405b5b0231661b7de56
출처 데이터셋
uspto-grants-2010_07
특허 번호
US07749530B2

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