Potassium Carbonate → 9-[(3,5-dimethylphenyl)methyl]-5-carbomethoxy-1,2-dihydrocarbazol-4(3H)-one

HRID 51407노트

반응식

HRID 51407 반응식
[C:1]([C:5]1[CH:17]=[CH:16][CH:15]=[C:14]2[C:6]=1[C:7]1[C:8](=[O:18])[CH2:9][CH2:10][CH2:11][C:12]=1[NH:13]2)([O:3][CH3:4])=[O:2].[CH3:19][C:20]1[CH:21]=[C:22]([CH:25]=[C:26]([CH3:28])[CH:27]=1)[CH2:23]Br.C(=O)([O-])[O-].[K+].[K+]>CN(C=O)C.C(OCC)(=O)C>[CH3:19][C:20]1[CH:27]=[C:26]([CH2:28][N:13]2[C:12]3[CH2:11][CH2:10][CH2:9][C:8](=[O:18])[C:7]=3[C:6]3[C:14]2=[CH:15][CH:16]=[CH:17][C:5]=3[C:1]([O:3][CH3:4])=[O:2])[CH:25]=[C:22]([CH3:23])[CH:21]=1

참가 물질

6

반응물 3

HCID 11430Potassium CarbonateHCID 1413343,5-Dimethylbenzyl bromideHCID 11368514methyl 4-oxo-2,3,4,9-tetrahydro-1H-carbazole-5-carboxylate

생성물 1

HCID 227388799-[(3,5-dimethylphenyl)methyl]-5-carbomethoxy-1,2-dihydrocarbazol-4(3H)-one수율 67%

시약·촉매·용매 2

HCID 6228Dimethylformamide용매HCID 8857Ethyl Acetate용매

실험 절차

A suspension of 5-carbomethoxy-1,2-dihydro-9H-carbazol-4(3H)-one (850 mg, 3.5 mM), 3,5-dimethylbenzyl bromide (765 mg, 3.8 mM), and potassium carbonate (500 mg, 3.61 mM) in 25 mL DMF was stirred at room temperature for 19 hours. The mixture was diluted with ethyl acetate, washed with H2O and saturated brine, dried over anhydrous magnesium sulfate, filtered, concentrated. The residue was purified by column chromatography on silica gel (elution with ethyl acetate) to afford 0.84 g (67%) of the 9-[(3,5-dimethylphenyl)methyl]-5-carbomethoxy-1,2-dihydrocarbazol-4(3H)-one as a foam. 1H NMR (DMSO-d6) δ7.7 (dd, 1H, J=1 and 8 Hz), 7.3-7.2 (m, 2H), 6.9 (s, 1H), 6.75 (s, 2H), 5.45 (s, 2H), 3.8 (s, 3H), 3.0 (m, 2H), 2.45 (m, 2H), 2.2 (s, 6H), and 2.1 (m, 2H). IR (KBr, cm−1) 1726, 1653, 1602, 1465, 1442, 1282, 1172, and 1116. MS (ES) m/e 362.

후처리

  1. washwashed with H2O and saturated brine
  2. dry with materialdried over anhydrous magnesium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customThe residue was purified by column chromatography on silica gel (elution with ethyl acetate)

출처 및 근거

ORD 기록
ord-386dcb05d591489088acfffe5da3975c
출처 데이터셋
uspto-grants-2004_03
특허 번호
US06713645B1

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