Hydrochloric Acid → 6-(3-methoxy-4-methoxymethoxy-phenyl)-1H-indazole

HRID 1861050노트

반응식

HRID 1861050 반응식
[CH3:1][O:2][C:3]1[CH:4]=[C:5]([C:13]2[CH:21]=[C:20]3[C:16]([CH:17]=[N:18][N:19]3S(C3C(C)=CC(C)=CC=3C)(=O)=O)=[CH:15][CH:14]=2)[CH:6]=[CH:7][C:8]=1[O:9][CH2:10][O:11][CH3:12].[OH-].[Na+].Cl.C(=O)(O)[O-].[Na+]>C1COCC1.CO>[CH3:1][O:2][C:3]1[CH:4]=[C:5]([C:13]2[CH:21]=[C:20]3[C:16]([CH:17]=[N:18][NH:19]3)=[CH:15][CH:14]=2)[CH:6]=[CH:7][C:8]=1[O:9][CH2:10][O:11][CH3:12]

참가 물질

7

반응물 4

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 516892Sodium BicarbonateHCID 218773546-(3-methoxy-4-methoxymethoxy-phenyl)-1-(2,4,6-trimethyl-benzenesulfonyl)-1H-indazole

생성물 1

HCID 218774636-(3-methoxy-4-methoxymethoxy-phenyl)-1H-indazole

시약·촉매·용매 2

HCID 887Methanol용매HCID 8028Tetrahydrofuran용매

반응 조건

온도
45 °C

실험 절차

Unpurified 6-(3-methoxy-4-methoxymethoxy-phenyl)-1-(2,4,6-trimethyl-benzenesulfonyl)-1H-indazole (under argon) was dissolved in THF (20 mL) and was treated with 1N NaOH in MeOH (70 mL degassed by bubbling through argon for 3 to 5 min). The mixture was heated to 45° C. for 1 h and allowed to cool. The mixture was neutralized by addition of 1N HCl (50 mL) followed by saturated sodium bicarbonate (200 mL). The product was extracted into ethyl acetate (350 mL), dried over sodium sulfate and concentrated under reduced pressure to give crude 6-(3-methoxy-4-methoxymethoxy-phenyl)-1H-indazole. Purification by silica gel chromatography (500 mL silica, 20% ethyl acetate in benzene (1.8 L), 30% ethyl acetate in benzene (1.8 L)) gave 6-(3-methoxy-4-methoxymethoxy-phenyl)-1H-indazole (1.19 g, 31%): 1H NMR (CDCl3) δ 7.80 (s, 1H), 7.69 (d, 1H, J=8.5 Hz), 7.52 (s, 1H), 7.29 (d, 1H, J=8.5 Hz), 7.16 (s, 1H), 7.13 (s, 1H), 7.08 (s, 1H). MS (ES) [m+Na]/z Calc'd 337, found 337; [m+Cl−]/z Calc'd 349, found 349.

후처리

  1. temperatureto cool
  2. extractionThe product was extracted into ethyl acetate (350 mL)
  3. dry with materialdried over sodium sulfate
  4. concentrationconcentrated under reduced pressure

출처 및 근거

ORD 기록
ord-4a919a04ea4c4bf1919768b93db32100
출처 데이터셋
uspto-grants-2003_03
특허 번호
US06531491B1

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