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Phenyl isocyanate → HCID 57730507, compound

HRID 63518
Notes
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Reaction equation

HRID 63518 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])[C:7]2=[O:22].[C:23]1([N:29]=[C:30]=[O:31])[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=1.CCN(C(C)C)C(C)C>C1COCC1>[O:21]=[C:15]1[CH:14]([N:8]2[C:7](=[O:22])[C:6]3[C:10](=[CH:11][CH:12]=[C:4]([CH2:3][NH:2][C:30]([NH:29][C:23]4[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=4)=[O:31])[CH:5]=3)[C:9]2=[O:13])[CH2:19][CH2:18][C:17](=[O:20])[NH:16]1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 7672Phenyl isocyanateHCID 81531DiisopropylethylamineHCID 670197065-(Aminomethyl)-2-(2,6-dioxopiperidin-3-yl)isoindoline-1,3-dione hydrochloride

Product 1

HCID 57730507HCID 57730507, compoundYield 63.2%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
40 °C

Procedure

To a stirred mixture of 5-aminomethyl-2-(2,6-dioxo-piperidin-3-yl)-isoindole-1,3-dione hydrochloride (0.97 g, 3.00 mmol) and phenylisocyanate (0.36 g, 3.30 mmol) in THF (20 mL), was added DIPEA (1.05 mL, 6.00 mmol) at room temperature under nitrogen. The mixture was heated to 40° C. for 18 h then cooled to rt. The solvent was removed in vacuo and the residue was dissolved in EtOAc (100 mL). The organic layer was washed with dil. aq. HCl (2×150 mL), water (100 mL), dried (MgSO4) and then concentrated. The product was dried in vacuo to give 1-[2-(2,6-dioxo-piperidin-3-yl)-1,3-dioxo-2,3-dihydro-1H-isoindol-5-ylmethyl]-3-phenyl-urea as a white solid (0.77 g, 63% yield): HPLC: Waters Symmetry C18, 5 μm, 3.9×150 mm, 1 mL/min, 240 nm, 40/60 CH3CN/0.1% H3PO4, 2.38 min (99.57%); mp: 288-290° C.; 1H NMR (DMSO-d6) δ 1.99-2.07 (m, 1H, CHH), 2.44-2.62 (m, 2H, CHH, CHH), 2.82-2.96 (m, 3H, CHH, CH2), 4.47 (d, J=5.9 Hz, 2H, CH2), 5.15 (dd, J=5.3, 12.5 Hz, 1H, CH), 6.82-6.93 (m, 2H, Ar), 7.22 (t, J=7.6 Hz, 2H, Ar), 7.40 (d, J=8.0 Hz, 2H, Ar), 7.78-7.91 (m, 3H, Ar, NH), 8.72 (s, 1H, NH), 11.13 (s, 1H, NH); 13C NMR (DMSO-d6) δ 22.01, 30.93, 42.62, 48.99, 117.83, 121.26, 121.69, 123.48, 128.64, 129.67, 131.60, 133.21, 140.27, 148.79, 155.28, 167.03, 167.20, 169.83, 172.74; LCMS: MH=407; Anal Calcd for C21H18N4O5+0.2H2O: C, 61.52; H, 4.52; N, 13.66. Found: C, 61.33; H, 4.36; N, 13.46.

Workup

  1. temperaturethen cooled to rt
  2. customThe solvent was removed in vacuo
  3. dissolutionthe residue was dissolved in EtOAc (100 mL)
  4. washThe organic layer was washed with dil. aq. HCl (2×150 mL), water (100 mL)
  5. dry with materialdried (MgSO4)
  6. concentrationconcentrated
  7. customThe product was dried in vacuo

Sources & evidence

ORD record
ord-26b0847e4c5f410bb57efe44cfbd5955
Source dataset
uspto-grants-2016_09
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09447070B2

Reaction notes

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