Isocyanatocarbonyl chloride → 1-benzyl-3-(1-((3,5-dimethylisoxazol-4-yl)methyl)-1H-pyrazol-4-yl)-1,3,5-triazinane-2,4,6-trione

HRID 658670Notes

Reaction equation

HRID 658670 reaction equation
[CH2:1]([NH:8][C:9]([NH:11][C:12]1[CH:13]=[N:14][N:15]([CH2:17][C:18]2[C:19]([CH3:24])=[N:20][O:21][C:22]=2[CH3:23])[CH:16]=1)=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[C:25](=[O:30])=[N:26][C:27](Cl)=[O:28]>C1COCC1>[CH2:1]([N:8]1[C:27](=[O:28])[NH:26][C:25](=[O:30])[N:11]([C:12]2[CH:13]=[N:14][N:15]([CH2:17][C:18]3[C:19]([CH3:24])=[N:20][O:21][C:22]=3[CH3:23])[CH:16]=2)[C:9]1=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

4

Reactant 2

HCID 119708Isocyanatocarbonyl chlorideHCID 574224201-benzyl-3-(1-((3,5-dimethylisoxazol-4-yl)methyl)-1H-pyrazol-4-yl)urea

Product 1

HCID 574224231-benzyl-3-(1-((3,5-dimethylisoxazol-4-yl)methyl)-1H-pyrazol-4-yl)-1,3,5-triazinane-2,4,6-trioneYield 93%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

1-benzyl-3-(1-((3,5-dimethylisoxazol-4-yl)methyl)-1H-pyrazol-4-yl)urea (example 95b) (100 mg, 0.31 mmol) in THF (2 mL) was cooled to 0° C. and n-chlorocarbonyl isocyanate (97 mg, 0.92 mmol) was slowly added. After addition, the reaction was allowed to warm up to room temperature and stirred for 1 hour. The reaction was concentrated and the residue was purified by silica column chromotography (100% to 90% dichloromethane in methanol: 30 minute gradient) to afford 1-benzyl-3-(1-((3,5-dimethylisoxazol-4-yl)methyl)-1H-pyrazol-4-yl)-1,3,5-triazinane-2,4,6-trione (112 mg, 93%) as a white solid. 1H NMR (DMSO-d6, 400 MHz): δ2.12 (s, 3H), 2.38 (s, 3H), 4.87 (s, 2H), 5.16 (s, 2H), 7.23-7.34 (m, 5H), 7.45 (s, 1H), 7.90 (s, 1H), 11.93 (s, 1H). LC/MS; [M+H] calculated for C19H18N6O4; expected 395.14; found 395.15. The title compound was shown to inhibit hT2R08 bitter receptor and had an IC50 of 1.14 μM.

Workup

  1. additionAfter addition
  2. concentrationThe reaction was concentrated
  3. customthe residue was purified by silica column chromotography (100% to 90% dichloromethane in methanol: 30 minute gradient)

Sources & evidence

ORD record
ord-cd0be419f0f7423c87c93a83054b414a
Source dataset
uspto-grants-2011_12
Patent number
US08076491B2

Reaction notes

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