تفاعل #10119

معادلة التفاعل

1,8-Diazabicyclo[5,4,0]undec-7-ene

4-(aminomethyl)-2-(2,6-dioxo(3-piperidyl))isoindoline-1,3-dione hydrochloride

cyclohexyl isocyanate

→

N-{[2-(2,6-dioxo(3-piperidyl))-1,3-dioxoisoindolin-4-yl]methyl}(cyclohexylamino)carboxamide

المردود 49.0%

المذيبات

CH3CN

ظروف التفاعل

المعالجة

1. 1
   workup.STIRRINGThe mixture was stirred at room temperature for 17 hours
2. 2
   أخرىThe solvent was removed in vacuo
3. 3
   workup.DISSOLUTIONthe residue was dissolved in CH2Cl2 (70 mL)
4. 4
   غسيلThe CH2Cl2 solution was washed with 1N HCl (30 mL), H2O (30 mL), brine (30 mL)
5. 5
   تجفيفdried (MgSO4)
6. 6
   أخرىThe solvent was removed in vacuo
7. 7
   أخرىthe residue was purified by chromatography (SiO2, CH2Cl2:EtOAc 1:1)

الإجراء التجريبي

1,8-Diazabicyclo[5,4,0]undec-7-ene (0.29 g, 1.90 mmol) was added to a stirred suspension of 4-(aminomethyl)-2-(2,6-dioxo(3-piperidyl))isoindoline-1,3-dione hydrochloride (0.6 g, 1.85 mmol) in CH3CN (50 mL). After stirring for 20 min, cyclohexyl isocyanate (0.35 g, 2.77 mmol) was added. The mixture was stirred at room temperature for 17 hours. The solvent was removed in vacuo and the residue was dissolved in CH2Cl2 (70 mL). The CH2Cl2 solution was washed with 1N HCl (30 mL), H2O (30 mL), brine (30 mL) and dried (MgSO4). The solvent was removed in vacuo and the residue was purified by chromatography (SiO2, CH2Cl2:EtOAc 1:1) to give N-{[2-(2,6-dioxo(3-piperidyl))-1,3-dioxoisoindolin-4-yl]methyl}(cyclohexylamino)carboxamide (0.37 g, 49%) as a white solid: mp 208–210° C.; 1H NMR (DMSO-d6) δ 11.13 (s, 1H), 7.86–7.68 (m, 3H), 6.34 (t, J=5.8 Hz, 1H), 6.04 (d, J=7.9 Hz, 1H), 5.18–5.11 (dd, J=5.3 and 12.4 Hz, 1H), 4.62 (d, J=5.8 Hz, 2H), 3.37 (m, 1H), 2.96–2.83 (m, 1H), 2.63–2.50 (m, 2H), 2.08–2.04 (m, 1H), 1.7–1.02 (m, 10H); 13C NMR (DMSO-d6) δ 172.78, 169.84, 167.59, 167.04, 157.28, 141.13, 134.64, 133.42, 131.51, 126.98, 121.64, 48.82, 47.91, 38.66, 33.23, 30.94, 25.27, 24.47, 21.99; Anal. Calcd. For C21H24N4O5: C, 61.16; H, 5.87; N, 13.58. Found: C, 61.21; H, 5.79; N, 13.63.

المصدر