Methyl iodide → ethyl 7-methoxy-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole-5-carboxylate

HRID 880947노트

반응식

HRID 880947 반응식
[OH:1][C:2]1[CH:3]=[C:4]([C:17]([O:19][CH2:20][CH3:21])=[O:18])[CH:5]=[C:6]2[C:10]=1[N:9]([CH:11]1[CH2:16][CH2:15][CH2:14][CH2:13][O:12]1)[N:8]=[CH:7]2.[C:22](=O)([O-])[O-].[K+].[K+].CI>CN(C)C=O.O>[CH3:22][O:1][C:2]1[CH:3]=[C:4]([C:17]([O:19][CH2:20][CH3:21])=[O:18])[CH:5]=[C:6]2[C:10]=1[N:9]([CH:11]1[CH2:16][CH2:15][CH2:14][CH2:13][O:12]1)[N:8]=[CH:7]2

참가 물질

6

반응물 3

HCID 6328Methyl iodideHCID 11430Potassium CarbonateHCID 66920492Ethyl 7-hydroxy-1-tetrahydropyran-2-YL-indazole-5-carboxylate

생성물 1

HCID 66920406ethyl 7-methoxy-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole-5-carboxylate수율 101.5%

시약·촉매·용매 2

HCID 962Water용매HCID 6228Dimethylformamide용매

실험 절차

To a mixture of ethyl 7-hydroxy-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole-5-carboxylate (WO2009144554) (100 mg, 0.34 mmol) and potassium carbonate (95.1 mg, 0.68 mmol) in N,N-dimethylformamide (1 mL) was added methyl iodide (32 μL, 0.51 mmol). The reaction was stirred at room temperature overnight. The reaction was diluted with water and extracted with ethyl acetate (4×). The combined organic layers were washed with water and brine, dried over sodium sulfate, filtered, and concentrated to give the title compound (105 mg, 100%) as a yellow oil. +ESI (M+1-THP) 221.2; 1H NMR (400 MHz, CDCl3, δ): 8.07-8.10 (m, 2H), 7.43 (d, J=0.98 Hz, 1H), 6.24 (dd, J=10.24, 2.44 Hz, 1H), 4.38 (q, J=7.15 Hz, 2H), 4.08 (dt, J=11.56, 2.02 Hz, 1H), 4.04 (s, 3H), 3.70-3.78 (m, 1H), 2.54-2.66 (m, 1H), 2.09-2.19 (m, 1H), 2.01-2.08 (m, 1H), 1.71-1.83 (m, 2H), 1.55-1.64 (m, 1H), 1.41 (t, J=7.12 Hz, 3H).

후처리

  1. extractionextracted with ethyl acetate (4×)
  2. washThe combined organic layers were washed with water and brine
  3. dry with materialdried over sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated

출처 및 근거

ORD 기록
ord-4f946364cc6040baa14f19595e5d07f4
출처 데이터셋
uspto-grants-2015_03
특허 번호
US08993586B2

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