反応式
[NH2:1][C:2]1[CH:10]=[CH:9][C:5]([C:6]([OH:8])=[O:7])=[CH:4][CH:3]=1.Cl[C:12]1[N:17]=[C:16](Cl)[C:15]([F:19])=[CH:14][N:13]=1>CO.O>[C:6]([C:5]1[CH:9]=[CH:10][C:2]([NH:1][C:12]2[N:17]=[C:16]([NH:1][C:2]3[CH:10]=[CH:9][C:5]([C:6]([OH:8])=[O:7])=[CH:4][CH:3]=3)[C:15]([F:19])=[CH:14][N:13]=2)=[CH:3][CH:4]=1)([OH:8])=[O:7]参加物
反応条件
- 温度
- 100 °C
実験手順
A mixture of 4-Aminobenzoic acid (410 mg, 3 mmol) and 2,4-dichloro-5-fluoropyrimidine (100 mg, 0.6 mmol) in methanol (10 mL) and water (1 mL) was stirred at 100° C. for 24 h to yield N2,N4-bis(4-carboxyphenyl)-5-fluoro-2,4-pyrimidinediamine after methanol was removal. This residue was redissolved in DMF (10 mL) and to it was added potassium carbonate (1.65 g, 12 mmol) and iodomethane (0.37 mL, 6 mmol), stirred at room temperature overnight, and then diluted with 1 N HCl (80 mL) and ethyl acetate (80 mL). The ethyl acetate layer was washed with 1N HCl (60 mL) and water (60 mL). The organic layer was separated, dried, evaporated and the resulting residue was recrystallized from ethyl acetate/hexanes to give N2,N4-bis(4-methoxycarbonylphenyl)-5-fluoro-2,4-pyrimidinediamine (150 mg, 63%). 1H NMR (acetone-d6): δ 3.85 (s, 3H), 3.88 (s, 3H), 7.88-7.97 (m, 4H), 7.98-8.05 (m, 4H), 8.18 (d, J=3.0 Hz, 1H), 9.00 (br, 1H, NH), 9.04 (br, 1H, NH); LCMS: ret. time: 27.07 min.; purity: 95.54%; MS (m/e): 397.04 (MH+).
出典と根拠
- ORDレコード
- ord-16d1d672096e438c82c85a742a3a50ed
- 出典データセット
- uspto-grants-2014_09
- 特許番号
- US08835430B2
関連ノート
読み込み中…