Acetic Acid → Ethyl 5-{[3-bromo-4-[(2,4-difluorobenzyl)oxy]-6-methyl-2-oxopyridin-1(2H)-yl]methyl}pyrazine-2-carboxylate

HRID 1867006ノート

反応式

HRID 1867006 の反応式
[Br:1][C:2]1[C:3](=[O:19])[NH:4][C:5]([CH3:18])=[CH:6][C:7]=1[O:8][CH2:9][C:10]1[CH:15]=[CH:14][C:13]([F:16])=[CH:12][C:11]=1[F:17].Br[CH2:21][C:22]1[N:23]=[CH:24][C:25]([C:28]([O:30][CH2:31][CH3:32])=[O:29])=[N:26][CH:27]=1.[H-].[Na+].C(O)(=O)C>C1COCC1>[Br:1][C:2]1[C:3](=[O:19])[N:4]([CH2:21][C:22]2[N:23]=[CH:24][C:25]([C:28]([O:30][CH2:31][CH3:32])=[O:29])=[N:26][CH:27]=2)[C:5]([CH3:18])=[CH:6][C:7]=1[O:8][CH2:9][C:10]1[CH:15]=[CH:14][C:13]([F:16])=[CH:12][C:11]=1[F:17]

参加物

6

反応物 4

HCID 176Acetic AcidHCID 24758Sodium hydrideHCID 22050280Ethyl 5-(bromomethyl)pyrazine-2-carboxylateHCID 220504293-bromo-4-[(2,4-difluorobenzyl)oxy]-6-methylpyridin-2(1H)-one

生成物 1

HCID 22050032Ethyl 5-{[3-bromo-4-[(2,4-difluorobenzyl)oxy]-6-methyl-2-oxopyridin-1(2H)-yl]methyl}pyrazine-2-carboxylate収率 78%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

反応条件

温度
55 °C

実験手順

To a mixture of 3-bromo-4-[(2,4-difluorobenzyl)oxy]-6-methylpyridin-2(1H)-one (6.0 g, 0.018 mol) and ethyl 5-(bromomethyl)pyrazine-2-carboxylate (4.9 g, 0.02 mol) in THF (50.0 mL) was added NaH (0.5 g) and heated at 55° C. under argon atmosphere for 3 h. The reaction mixture was cooled added acetic acid (1.2 ml) and concentrated under reduced pressure. The residue was triturated with water and filtered the solid. It was washed with water, followed by ethanol and dried in vacuo to afford the title compound (3.0 g, 78%)as alight brown powder: 1H NMR (CD3OD/400 MHz) δ9.10 (d. 1H, J=1.2 Hz), 8.77 (d, 1H, J=1.2 Hz), 7.61 (m, 1H), 7.01 (m 2H), 6.54 (s, 1H), 5.54 (s, 2H), 5.30 (s, 2H), 4.43 (q, 2H, J=6.8 Hz), 2.52 (s, 3H), and 1.39 (t, 3H, J=6.8 Hz); 19F NMR (CD3OD/400 MHz) δ−111.64 (m), and −116.04 (m); ES-HRMS m/z 494.0482 (M+H C21H19N3O4BrF2 requires 494.0522).

後処理

  1. temperatureThe reaction mixture was cooled
  2. concentrationconcentrated under reduced pressure
  3. customThe residue was triturated with water
  4. filtrationfiltered the solid
  5. washIt was washed with water
  6. customdried in vacuo

出典と根拠

ORDレコード
ord-276708a0ab4e496a8e6b417b58cdfc19
出典データセット
uspto-grants-2009_12
特許番号
US07629363B2

反応ノート

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