Pentanenitrile, 4,4-dimethyl-3-oxo- → ethyl 3-(3-(3-t-butyl-5-amino-1H-pyrazol-1-yl)phenyl)propanoate
反応式
[CH2:1]([O:3][C:4](=[O:15])[CH2:5][CH2:6][C:7]1[CH:12]=[CH:11][CH:10]=[C:9]([NH:13][NH2:14])[CH:8]=1)[CH3:2].[CH3:16][C:17]([CH3:24])([CH3:23])[C:18](=O)[CH2:19][C:20]#[N:21]>C(O)C>[CH2:1]([O:3][C:4](=[O:15])[CH2:5][CH2:6][C:7]1[CH:12]=[CH:11][CH:10]=[C:9]([N:13]2[C:20]([NH2:21])=[CH:19][C:18]([C:17]([CH3:24])([CH3:23])[CH3:16])=[N:14]2)[CH:8]=1)[CH3:2]参加物
4
実験手順
A mixture of Example Y (13 g, 53.3 mmol) and 4,4-dimethyl-3-oxo-pentanenitrile (6.9 g, 55 mol) in ethanol (150 mL) was heated to reflux overnight. The reaction solution was evaporated under reduced pressure. The residue was purified by column chromatography to give 3-[3-(5-amino-3-t-butyl-pyrazol-1-yl)-phenyl]-propionic acid ethyl ester (14.3 g, 45.4 mmol) as a white solid. 1H NMR (DMSO-d6): 7.39-7.32 (m, 3H), 7.11 (d, J=6.8 Hz, 1H), 5.34 (s, 1H), 5.16 (s, 2H), 4.03 (q, J=7.2 Hz, 2H), 2.88 (t, J=7.6 Hz, 2H), 2.63 (t, J=7.6 Hz, 2H), 1.19 (s, 9H), 1.15 (t, J=7.2 Hz, 3H).