Hydrochloric Acid → 1-(3,5-dimethyl-phenyl)-3-[2-(2,6-dioxo-piperidin-3-yl)-1-oxo-2,3-dihydro-1H-isoindol-5-ylmethyl]-urea

HRID 331631

Reaction equation

HRID 331631 reaction equation
[NH2:1][CH2:2][C:3]1[CH:4]=[C:5]2[C:9](=[CH:10][CH:11]=1)[C:8](=[O:12])[N:7]([CH:13]1[CH2:18][CH2:17][C:16](=[O:19])[NH:15][C:14]1=[O:20])[CH2:6]2.[N:21]([C:24]1[CH:29]=[C:28]([CH3:30])[CH:27]=[C:26]([CH3:31])[CH:25]=1)=[C:22]=[O:23].Cl>C(#N)C>[CH3:31][C:26]1[CH:25]=[C:24]([NH:21][C:22]([NH:1][CH2:2][C:3]2[CH:4]=[C:5]3[C:9](=[CH:10][CH:11]=2)[C:8](=[O:12])[N:7]([CH:13]2[CH2:18][CH2:17][C:16](=[O:19])[NH:15][C:14]2=[O:20])[CH2:6]3)=[O:23])[CH:29]=[C:28]([CH3:30])[CH:27]=1

Participants

5

Reactant 3

HCID 313Hydrochloric AcidHCID 5214883,5-Xylyl isocyanateHCID 594432803-(5-(Aminomethyl)-1-oxoisoindolin-2-yl)piperidine-2,6-dione

Product 1

HCID 445388261-(3,5-dimethyl-phenyl)-3-[2-(2,6-dioxo-piperidin-3-yl)-1-oxo-2,3-dihydro-1H-isoindol-5-ylmethyl]-ureaYield 67%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

TEA (0.28 ml, 2 mmol) was added to a stirred mixture of 3-(5-aminomethyl-1-oxo-1,3-dihydro-isoindol-2-yl)-piperidine-2,6-dione (0.37 g, 1 mmol) and 1-isocyanato-3,5-dimethyl-benzene (0.17 mg, 1 mmol) in acetonitrile (10 mL) under nitrogen. The mixture was stirred at ambient temperature for 1 h, during which time it remained a suspension. The reaction was then monitored and determined to be complete. A 3.5% aqueous HCl solution (10 mL) was added, and the mixture was stirred for 10 minutes. The solid was isolated by filtration, and the solid was washed with additional 3.5% aq. HCl (20 mL) and acetonitrile (20 mL), yielding 1-(3,5-dimethyl-phenyl)-3-[2-(2,6-dioxo-piperidin-3-yl)-1-oxo-2,3-dihydro-1H-isoindol-5-ylmethyl]-urea as a white solid (280 mg, 67%). HPLC: Waters Symmetry C-18, 3.9×150 mm, 5 micro, 1 mL/min, 240 nm, 40/60 CH3CN/0.1% H3PO4 in H2O: tR=3.4 min (96%); mp. 289-291° C. 1H NMR (DMSO-d6) δ 1.92-2.06 (m, 1H, CHH), 2.19 (s, 6H, CH3+CH3), 2.38 (qd, J=4.4, 13.1 Hz, 1H, CHH), 2.54-2.66 (m, 1H, CHH), 2.80-3.02 (m, 1H, CH—H), 4.17-4.58 (m, 4H, CH2+CHH), 5.11 (dd, J=5.2, 13.3 Hz, 1H, CHN), 6.54 (s, 1H, Ar), 6.69 (t, J=5.9 Hz, 1H, Ar), 7.03 (s, 2H, Ar), 7.44 (d, J=7.9 Hz, 1H, Ar), 7.51 (s, 1H, NH), 7.69 (d, J=7.7 Hz, 1H, Ar), 8.45 (s, 1H, NH), 10.98 (s, 1H, NH). 13C NMR (DMSO-d6) δ 21.12, 22.49, 31.20, 42.76, 47.10, 51.56, 115.54, 121.88, 122.78, 122.93, 126.91, 130.27, 137.49, 140.19, 142.38, 144.93, 155.21, 167.95, 170.99, 172.85; LCMS MH=421. Anal Calcd for: C23H24N4O4+0.1H2O: C, 65.42, H, 5.78; N, 13.27. found: C, 65.15; H, 5.58; N, 13.18.

Workup

  1. stirringthe mixture was stirred for 10 minutes
  2. customThe solid was isolated by filtration
  3. washthe solid was washed with additional 3.5% aq. HCl (20 mL) and acetonitrile (20 mL)

Sources & evidence

ORD record
ord-bd37c2b4cf534ab083504eacc5f49f6e
Source dataset
uspto-grants-2014_11
Patent number
US08877780B2

Linked notes

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