Methyl iodide → 3-[3-(6-Methoxy-m-tolyl)-1,2-benzisoxazol-5-yl]-1-methyl-6-(trifluoromethyl)-2,4(1H,3H)-pyrimidinedione

HRID 1274550Notes

Reaction equation

HRID 1274550 reaction equation
[CH3:1][O:2][C:3]1[C:8]([CH3:9])=[CH:7][C:6]([C:10]2[C:14]3[CH:15]=[C:16]([N:19]4[C:24](=[O:25])[CH:23]=[C:22]([C:26]([F:29])([F:28])[F:27])[NH:21][C:20]4=[O:30])[CH:17]=[CH:18][C:13]=3[O:12][N:11]=2)=[CH:5][CH:4]=1.[C:31](=O)([O-])[O-].[K+].[K+].CI>CN(C)C=O>[CH3:1][O:2][C:3]1[C:8]([CH3:9])=[CH:7][C:6]([C:10]2[C:14]3[CH:15]=[C:16]([N:19]4[C:24](=[O:25])[CH:23]=[C:22]([C:26]([F:28])([F:29])[F:27])[N:21]([CH3:31])[C:20]4=[O:30])[CH:17]=[CH:18][C:13]=3[O:12][N:11]=2)=[CH:5][CH:4]=1

Participants

5

Reactant 3

HCID 6328Methyl iodideHCID 11430Potassium CarbonateHCID 700979223-[3-(6-Methoxy-m-tolyl)-1,2-benzisoxazol-5-yl]-6-(trifluoromethyl)-2,4(1H,3H)-pyrimidinedione

Product 1

HCID 700990493-[3-(6-Methoxy-m-tolyl)-1,2-benzisoxazol-5-yl]-1-methyl-6-(trifluoromethyl)-2,4(1H,3H)-pyrimidinedione

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A mixture of 3-[3-(6-methoxy-m-tolyl)-1,2-benzisoxazol-5-yl]-6-(trifluoromethyl)-2,4(1H,3H)-pyrimidinedione (10.5 g, 0.0255 mol) and potassium carbonate (7.04 g, 0.051 mol) in N,N-dimethylformamide is stirred for 15 minutes, treated with methyl iodide (7.24 g, 0.051 mol), stirred overnight, and poured onto ice. The resultant aqueous mixture is extracted with methylene chloride. The organic extracts are combined, washed with water, dried over anhydrous sodium sulfate, and concentrated in vacua to obtain a brown glass. Dry column chromatography of the glass using silica gel and a hexanes/ethyl acetate solution (3:1) gives the title product as an off-white solid which is identified by NMR spectral analyses.

Workup

  1. stirringstirred overnight
  2. additionpoured onto ice
  3. extractionThe resultant aqueous mixture is extracted with methylene chloride
  4. washwashed with water
  5. dry with materialdried over anhydrous sodium sulfate
  6. concentrationconcentrated in vacua
  7. customto obtain a brown glass
  8. customDry column chromatography of the glass

Sources & evidence

ORD record
ord-a61c7dcc38bb4cf7a6ac303e45f09b97
Source dataset
uspto-grants-2000_12
Patent number
US06156700

Reaction notes

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