反应详情

A mixture of N-(3-{1-[(3S)-3-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)-3-phenylpropyl]-4-piperidinyl}phenyl)-2-methylpropanamide (4.60 g, 9.06 mmol) and hydrazine (3.62 g, 72.4 mmol) in ethanol (150 mL) was refluxed for 12 h. The resulting white precipitate was filtered out and the filtrate was concentrated under vacuum. The residue was washed with CH2Cl2/EtOAc. (1:1, 3×50 mL) and the combined organic fractions were concentrated in vacuo to give the desired product (2.90 g, 95%). 1H NMR (400 MHz, CDCl3) δ 7.45 (s, 1H), 7.39–7.30 (m, 6H), 7.297.19 (m, 2H), 6.95 (d, 1H, J=7.2), 4.01 (t, 1H, J=6.8 Hz), 3.04 (t, 2H, J=10.6 Hz), 2.62–2.30 (m, 6H) 2.05–1.70 (m, 8H), 1.24 (d, 6H, J=6.8 Hz); ESMS m/e: 380.4 (M+H)+.

1. temperaturewas refluxed for 12 h
2. filtrationThe resulting white precipitate was filtered out
3. concentrationthe filtrate was concentrated under vacuum
4. washThe residue was washed with CH2Cl2/EtOAc
5. concentration(1:1, 3×50 mL) and the combined organic fractions were concentrated in vacuo