Methyl iodide → (4-fluoro-phenyl)-(3-methoxy-2-phenoxymethyl-6,7-dihydro-4H-pyrazolo[1,5-a]pyrazin-5-yl)-methanone

HRID 2369614ノート

反応式

HRID 2369614 の反応式
IC.[F:3][C:4]1[CH:9]=[CH:8][C:7]([C:10]([N:12]2[CH2:17][CH2:16][N:15]3[N:18]=[C:19]([CH2:22][O:23][C:24]4[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=4)[C:20]([OH:21])=[C:14]3[CH2:13]2)=[O:11])=[CH:6][CH:5]=1.[C:30]([O-])([O-])=O.[Cs+].[Cs+]>CN(C=O)C>[F:3][C:4]1[CH:5]=[CH:6][C:7]([C:10]([N:12]2[CH2:17][CH2:16][N:15]3[N:18]=[C:19]([CH2:22][O:23][C:24]4[CH:25]=[CH:26][CH:27]=[CH:28][CH:29]=4)[C:20]([O:21][CH3:30])=[C:14]3[CH2:13]2)=[O:11])=[CH:8][CH:9]=1

参加物

5

反応物 3

HCID 6328Methyl iodideHCID 10796Cesium carbonateHCID 67960185(4-fluoro-phenyl)-(3-hydroxy-2-phenoxymethyl-6,7-dihydro-4H-pyrazolo[1,5-a]pyrazin-5-yl)-methanone

生成物 1

HCID 67960058(4-fluoro-phenyl)-(3-methoxy-2-phenoxymethyl-6,7-dihydro-4H-pyrazolo[1,5-a]pyrazin-5-yl)-methanone収率 25.2%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

実験手順

Iodomethane (0.005 mL, 0.08 mmol) was added to a stirred suspension of (4-fluoro-phenyl)-(3-hydroxy-2-phenoxymethyl-6,7-dihydro-4H-pyrazolo[1,5-a]pyrazin-5-yl)-methanone (19 mg, 0.052 mmol) and Cs2CO3 (0.034 g, 0.1 mmol) in DMF (0.5 mL). The mixture was stirred at room temperature for 45 minutes and the solvent was evaporated in vacuo. The crude product was purified by flash column chromatography (silica; AcOEt in DCM 0/100 to 100/0). The desired fractions were collected and the solvents evaporated in vacuo to yield (4-fluoro-phenyl)-(3-methoxy-2-phenoxymethyl-6,7-dihydro-4H-pyrazolo[1,5-a]pyrazin-5-yl)-methanone (5 mg, 25% yield) as a colourless oil. C21H20FN3O3 1H NMR (400 MHz, CDCl3) δ ppm 3.78 (br. s., 3H), 4.01 (br. s., 2H), 4.20 (br. s., 2H), 4.80 (br. s., 2H), 5.02 (s, 2H), 6.93-7.00 (m, 1H), 7.03 (d, J=7.9 Hz, 2H), 7.16 (t, J=8.7 Hz, 2H), 7.27-7.34 (m, 2H), 7.46-7.53 (m, 2H).

後処理

  1. customthe solvent was evaporated in vacuo
  2. customThe crude product was purified by flash column chromatography (silica; AcOEt in DCM 0/100 to 100/0)
  3. customThe desired fractions were collected
  4. customthe solvents evaporated in vacuo

出典と根拠

ORDレコード
ord-fc60274d495d498d8891e689ac8adf07
出典データセット
uspto-grants-2014_04
特許番号
US08703946B2

反応ノート

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