3-Nitrophenyl isocyanate → HCID 66589697, compound

HRID 1091322Notes

Reaction equation

HRID 1091322 reaction equation
Cl.[NH2:2][CH2:3][C:4]1[CH:5]=[C:6]2[C:10](=[CH:11][CH:12]=1)[C:9](=[O:13])[N:8]([CH:14]1[CH2:19][CH2:18][C:17](=[O:20])[NH:16][C:15]1=[O:21])[CH2:7]2.[N+:22]([C:25]1[CH:26]=[C:27]([N:31]=[C:32]=[O:33])[CH:28]=[CH:29][CH:30]=1)([O-:24])=[O:23]>C(#N)C>[O:21]=[C:15]1[CH:14]([N:8]2[CH2:7][C:6]3[C:10](=[CH:11][CH:12]=[C:4]([CH2:3][NH:2][C:32]([NH:31][C:27]4[CH:28]=[CH:29][CH:30]=[C:25]([N+:22]([O-:24])=[O:23])[CH:26]=4)=[O:33])[CH:5]=3)[C:9]2=[O:13])[CH2:19][CH2:18][C:17](=[O:20])[NH:16]1

Participants

4

Reactant 2

HCID 768353-Nitrophenyl isocyanateHCID 665895253-(5-(aminomethyl)-1-oxo-2,3-dihydro-1H-isoindol-2-yl)piperidine-2,6-dione hydrochloride

Product 1

HCID 66589697HCID 66589697, compoundYield 39%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

To a stirred mixture of 3-(5-aminomethyl-1-oxo-1,3-dihydro-isoindol-2-yl)-piperidine-2,6-dione hydrochloride (0.74 g, 2.00 mmol) and 3-nitropheny isocyanate (0.33 g, 2.00 mmol) in acetonitrile (20 mL) was added TEA (0.56 mL, 4.00 mmol) at RT under nitrogen. After 12 hrs, the solid was filtered and purified by preparative HPLC (gradient: CH3CN/H2O: 15/85 for 5 min, to 100/0 in 10 min, 100/0 for 5 min). After evaporation of the solvent, the residue was triturated in ether (20 mL) for 1 hr. The product was then isolated by filtration and dried in vacuo to give 1-((2-(2,6-dioxopiperidin-3-yl)-1-oxoisoindolin-5-yl)methyl)-3-(3-nitrophenyl)urea as a yellow solid (0.34 g, 39% yield).

Workup

  1. filtrationthe solid was filtered
  2. custompurified by preparative HPLC (gradient: CH3CN/H2O: 15/85 for 5 min, to 100/0 in 10 min, 100/0 for 5 min)
  3. customAfter evaporation of the solvent
  4. customthe residue was triturated in ether (20 mL) for 1 hr
  5. customThe product was then isolated by filtration
  6. customdried in vacuo

Sources & evidence

ORD record
ord-51a47cba3b204e05b1a955696b577622
Source dataset
uspto-grants-2012_03
Patent number
US08129375B2

Reaction notes

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