Lithium hydroxide, monohydrate → 2-(4-Methoxypyrimidin-5-yl)acetic acid
反応式
C[O:2][C:3](=[O:13])[CH2:4][C:5]1[C:6]([O:11][CH3:12])=[N:7][CH:8]=[N:9][CH:10]=1.O.[OH-].[Li+]>O.C(O)C>[CH3:12][O:11][C:6]1[C:5]([CH2:4][C:3]([OH:13])=[O:2])=[CH:10][N:9]=[CH:8][N:7]=1参加物
5
実験手順
To a stirred solution of 0.21 g (1.14 mmol) of methyl(4-methoxy-5-pyrimidinyl)acetate from Step A in 0.5 mL of water and 1.5 mL of ethanol was added 81 mg (1.9 mmol) of lithium hydroxide hydrate. The reaction mixture was stirred at ambient temperature for 2 h then concentrated in vacuo to remove all volatiles. The residue was diluted with 3 mL of 2.0 N aqueous hydrogen chloride and then concentrated in vacuo to remove all volatiles to yield the title compound as an off white solid (191 mg, 90%). 1H-NMR (500 MHz, CD3OD) δ: 8.72 (s, 1H), 8.35 (s, 1H), 4.01 (s, 3H), 3.57 (s,2H). LC-MS: m/z (E/S) 169 (MH)+.
後処理
- concentrationthen concentrated in vacuo
- customto remove all volatiles
- additionThe residue was diluted with 3 mL of 2.0 N aqueous hydrogen chloride
- concentrationconcentrated in vacuo
- customto remove all volatiles
出典と根拠
- ORDレコード
- ord-07202621feb64910946b3a9644f34d15
- 出典データセット
- uspto-grants-2013_08
- 特許番号
- US08501786B2
反応ノート
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