Potassium Carbonate → Methyl 1-[methyl-(4-fluorophenyl)sulfonyl-amino]cyclopropanecarboxylate
反応式
[F:1][C:2]1[CH:7]=[CH:6][C:5]([S:8]([NH:11][C:12]2([C:15]([O:17][CH3:18])=[O:16])[CH2:14][CH2:13]2)(=[O:10])=[O:9])=[CH:4][CH:3]=1.[C:19]([O-])([O-])=O.[K+].[K+]>CN(C=O)C>[CH3:19][N:11]([S:8]([C:5]1[CH:6]=[CH:7][C:2]([F:1])=[CH:3][CH:4]=1)(=[O:10])=[O:9])[C:12]1([C:15]([O:17][CH3:18])=[O:16])[CH2:14][CH2:13]1参加物
4
反応条件
- 温度
- 50 °C
実験手順
A solution of 13A (1 g, 3.67 mmol) in DMF (15 mL) was added with an. K2CO3 (1.5 mol eq, 0.76 g) and, after few minutes, 2-iodomethane (1.2 mol eq, 0.81 ml) was added and the mixture was heated at 50° C. for 12 h. The solvent was removed under reduced pressure, water was added to the residue (60 mL) and the aqueous phase was extracted with EtOAc (3×30 mL). The recombined organic phases were dried over Na2SO4 and evaporated under reduced pressure to afford 14A as a pale yellow oil (950 mg, 90% yield). 1HNMR (DMSO, 200 MHz) δ 2.43 (bs, 4H), 2.88 (s, 3H), 2.90 (s, 3H), 7.42 (t, 2H, J=8.2), 7.87 (m, 2H).