Glycolic Acid → 1-(2-Methylpropyl)-1H-imidazo[4,5-c]quinoline-2-methanol

HRID 1599720노트

반응식

HRID 1599720 반응식
[N+:1]([C:4]1[CH:5]=[N:6][C:7]2[C:12]([C:13]=1[NH:14][CH2:15][CH:16]([CH3:18])[CH3:17])=[CH:11][CH:10]=[CH:9][CH:8]=2)([O-])=O.[C:19](OCC)(=[O:21])[CH3:20].S([O-])([O-])(=O)=O.[Mg+2].C(O)(=O)CO>Cl.[Pt]>[CH3:17][CH:16]([CH3:18])[CH2:15][N:14]1[C:13]2[C:12]3[CH:11]=[CH:10][CH:9]=[CH:8][C:7]=3[N:6]=[CH:5][C:4]=2[N:1]=[C:20]1[CH2:19][OH:21]

참가 물질

7

반응물 4

HCID 757Glycolic AcidHCID 8857Ethyl AcetateHCID 24083Sulfuric acid magnesium salt (1:1)HCID 109993104-Isobutylamino-3-nitroquinoline

생성물 1

HCID 152244061-(2-Methylpropyl)-1H-imidazo[4,5-c]quinoline-2-methanol수율 89.6%

시약·촉매·용매 2

HCID 23939Platinum촉매HCID 313Hydrochloric Acid용매

실험 절차

3-Nitro-4-(2-methylpropylamino)quinoline (36.8 g; 0.15 mol) was added to a mixture of ethyl acetate (300 mL), 5% Pt/C (about 1 g), and magnesium sulfate (30 g). The mixture was hydrogenated at about 50 psi initial pressure. When hydrogenation was complete the solids were filtered from the mixture and the ethyl acetate was evaporated. The resulting intermediate diamine was mixed with glycolic acid (26.9 g; 0.35 mol) and the mixture was heated at 150°-160° C. for about 3 hr with occasional manual stirring. The reaction mixture was then dissolved in dilute hydrochloric acid and treated with decolorizing carbon, and the solids were filtered from the mixture. The filtrate was made basic with ammonium hydroxide to precipitate the product as a greenish solid. The solid was filtered and dried to give 34.3 g (89.6%) of crude product. The solid was reprecipitated a second time as above and the product recrystallized from ethyl acetate to give greenish crystals, m.p. 165°-168° C. Analysis: Calculated: C, 70.6; H, 6.7; N, 16.5. Found: C, 70.4, H, 6.7; N, 16.3.

후처리

  1. filtrationwere filtered from the mixture
  2. customthe ethyl acetate was evaporated
  3. temperaturethe mixture was heated at 150°-160° C. for about 3 hr with occasional manual
  4. additiontreated with decolorizing carbon
  5. filtrationthe solids were filtered from the mixture
  6. customto precipitate the product as a greenish solid
  7. filtrationThe solid was filtered
  8. customdried

출처 및 근거

ORD 기록
ord-5ba4a6c525a34d659766177647d863b7
출처 데이터셋
uspto-grants-1998_04
특허 번호
US05741909

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