Isopropyl isocyanate → HCID 21988520, compound

HRID 2103540Notes

Reaction equation

HRID 2103540 reaction equation
[N:1]12[CH2:11]CCN=[C:7]1[CH2:6]CCC[CH2:2]2.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].C(N=C=[O:39])(C)C>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:2]([N:1]([CH3:11])[CH2:7][CH3:6])=[O:39])[C:19]2=[O:24])[CH2:30][CH2:29][C:28](=[O:31])[NH:27]1

Participants

5

Reactant 3

HCID 61277Isopropyl 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 21988520HCID 21988520, compoundYield 36.3%

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, isopropyl isocyanate (0.24 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:CH3OH 97.5:2.5) to give N-{[2-(2,6-dioxo(3-piperidyl))-1,3-dioxoisoindolin-4-yl]methyl}[(methylethylamino)]carboxamide (0.25 g, 36%) as a white solid: mp 180-182° C.; 1H NMR (DMSO-d6) δ 11.19 (s, 1H), 7.87-7.68 (m, 3H), 6.33 (t, J=5.9 Hz, 1H), 6.02 (d, J=7.5 Hz, 1H), 5.18-5.11 (dd, J=5.2 and 12.4 Hz, 1H), 4.62 (d, J=5.9 Hz, 2H), 3.73-3.35 (m, 1H), 2.98-2.83 (m, 1H), 2.63-2.50 (m, 2H), 2.08-2.04 (m, 1H), 1.04 (d, J=6.5 Hz, 6H); 13C NMR (DMSO-d6) δ 172.78, 169.85, 167.59, 167.05, 157.36, 141.16, 134.65, 133.39, 131.52, 126.98, 121.64, 48.82, 41.03, 38.64, 30.94, 23.18, 21.99; Anal. Calcd. For C18H20N4O5: C, 58.06; H, 5.41; N, 15.05. Found: C, 58.20; H, 5.44; N, 14.95.

Workup

  1. stirringThe mixture was stirred at room temperature for
  2. custom17 hours
  3. customThe solvent was removed in vacuo
  4. dissolutionthe residue was dissolved in CH2Cl2 (70 mL)
  5. washThe CH2Cl2 solution was washed with 1N HCl (30 mL), H2O (30 mL), brine (30 mL)
  6. dry with materialdried (MgSO4)
  7. customThe solvent was removed in vacuo
  8. customthe residue was purified by chromatography (SiO2, CH2Cl2:CH3OH 97.5:2.5)

Sources & evidence

ORD record
ord-a80be96120f34cb187922f5ac6c9b3f5
Source dataset
uspto-grants-2009_08
Patent number
US07576104B2

Reaction notes

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