Cyclohexyl isocyanate → n-{[2-(2,6-Dioxo(3-piperidyl))-1,3-dioxoisoindolin-4-yl]methyl}(cyclohexylamino)carboxamide

HRID 906776Notes

Reaction equation

HRID 906776 reaction equation
N12CCCN=C1CCCCC2.Cl.[NH2:13][CH2:14][C:15]1[CH:23]=[CH:22][CH:21]=[C:20]2[C:16]=1[C:17](=[O:33])[N:18]([CH:25]1[CH2:30][CH2:29][C:28](=[O:31])[NH:27][C:26]1=[O:32])[C:19]2=[O:24].[CH:34]1([N:40]=[C:41]=[O:42])[CH2:39][CH2:38][CH2:37][CH2:36][CH2:35]1>CC#N>[O:32]=[C:26]1[CH:25]([N:18]2[C:17](=[O:33])[C:16]3[C:20](=[CH:21][CH:22]=[CH:23][C:15]=3[CH2:14][NH:13][C:41]([NH:40][CH:34]3[CH2:39][CH2:38][CH2:37][CH2:36][CH2:35]3)=[O:42])[C:19]2=[O:24])[CH2:30][CH2:29][C:28](=[O:31])[NH:27]1

Participants

5

Reactant 3

HCID 18502Cyclohexyl isocyanateHCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 219885254-(aminomethyl)-2-(2,6-dioxopiperidin-3-yl)-2,3-dihydro-1H-isoindole-1,3-dione hydrochloride

Product 1

HCID 21988530n-{[2-(2,6-Dioxo(3-piperidyl))-1,3-dioxoisoindolin-4-yl]methyl}(cyclohexylamino)carboxamideYield 49%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

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), 1.76-1.02 (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.

Workup

  1. stirringThe mixture was stirred at room temperature for 17 hours
  2. customThe solvent was removed in vacuo
  3. dissolutionthe residue was dissolved in CH2Cl2 (70 mL)
  4. washThe CH2Cl2 solution was washed with 1N HCl (30 mL), H2O (30 mL), brine (30 mL)
  5. dry with materialdried (MgSO4)
  6. customThe solvent was removed in vacuo
  7. customthe residue was purified by chromatography (SiO2, CH2Cl2: EtOAc 1:1)

Sources & evidence

ORD record
ord-cc9a078891a34428b9b3b55e8315ee39
Source dataset
uspto-grants-2011_09
Patent number
US08012997B2

Reaction notes

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