Cesium carbonate → ethyl 3-methyl-3-[4-(1-[2-(trimethylsilyl)ethoxy]methyl-1H-pyrrolo[2,3-b]pyridin-4-yl)-1H-pyrazol-1-yl]butanoate

HRID 44920

반응식

HRID 44920 반응식
[NH:1]1[CH:5]=[C:4]([C:6]2[CH:11]=[CH:10][N:9]=[C:8]3[N:12]([CH2:15][O:16][CH2:17][CH2:18][Si:19]([CH3:22])([CH3:21])[CH3:20])[CH:13]=[CH:14][C:7]=23)[CH:3]=[N:2]1.[CH2:23]([O:25][C:26](=[O:31])[CH:27]=[C:28]([CH3:30])[CH3:29])[CH3:24].C(=O)([O-])[O-].[Cs+].[Cs+]>CN(C=O)C.O>[CH3:29][C:28]([N:1]1[CH:5]=[C:4]([C:6]2[CH:11]=[CH:10][N:9]=[C:8]3[N:12]([CH2:15][O:16][CH2:17][CH2:18][Si:19]([CH3:22])([CH3:21])[CH3:20])[CH:13]=[CH:14][C:7]=23)[CH:3]=[N:2]1)([CH3:30])[CH2:27][C:26]([O:25][CH2:23][CH3:24])=[O:31]

참가 물질

6

반응물 3

HCID 10796Cesium carbonateHCID 12516Ethyl 3,3-dimethylacrylateHCID 574775784-(1H-Pyrazol-4-yl)-1-[2-(trimethylsilyl)ethoxy]methyl-1H-pyrrolo[2,3-b]pyridine

생성물 1

HCID 57477580ethyl 3-methyl-3-[4-(1-[2-(trimethylsilyl)ethoxy]methyl-1H-pyrrolo[2,3-b]pyridin-4-yl)-1H-pyrazol-1-yl]butanoate수율 79%

시약·촉매·용매 2

HCID 962Water용매HCID 6228Dimethylformamide용매

실험 절차

4-(1H-Pyrazol-4-yl)-1-[2-(trimethylsilyl)ethoxy]methyl-1H-pyrrolo[2,3-b]pyridine (220 mg, 0.0006996 mol) and 3-methyl-2-butenoic acid ethyl ester (292 μL, 0.00210 mol) were dissolved in DMF (10 mL). Cesium carbonate (912 mg, 0.00280 mol) was added and the resulting mixture was stirred at room temperature for 3 hours. The reaction mixture was diluted with water, and the product was extracted with MTBE several times. The combined extracts were dried over sodium sulfate and concentrated. The crude residue was purified by flash column chromatography (0-60% EtOAc/Hexanes) to afford ethyl 3-methyl-3-[4-(1-[2-(trimethylsilyl)ethoxy]methyl-1H-pyrrolo[2,3-b]pyridin-4-yl)-1H-pyrazol-1-yl]butanoate (244 mg, 79%). 1H NMR (300 MHz, CDCl3): 8.37 (d, 1H), 8.11 (s, 1H), 8.09 (s, 1H), 7.45 (d, 1H), 7.24 (d, 1H), 6.79 (d, 1H), 5.77 (s, 2H), 4.10 (q, 2H), 3.62 (dd, 2H), 3.04 (s, 2H), 1.88 (s, 6H), 1.20 (t, 3H), 0.98 (dd, 2H), 0.00 (s, 9H); MS(ES): 443 (M+1).

후처리

  1. extractionthe product was extracted with MTBE several times
  2. dry with materialThe combined extracts were dried over sodium sulfate
  3. concentrationconcentrated
  4. customThe crude residue was purified by flash column chromatography (0-60% EtOAc/Hexanes)

출처 및 근거

ORD 기록
ord-a046ba89a1654ddfafe84a7ac62b0b80
출처 데이터셋
uspto-grants-2013_09
특허 번호
US08541425B2

연결된 노트

불러오는 중…