Water → 2,4,4-trimethyl-8-nitro-2,4-dihydro-1H-benzo[b][1,2,4]triazolo[4,3-d][1,4]oxazin-1-one

HRID 633456Notes

Reaction equation

HRID 633456 reaction equation
[CH3:1][C:2]1([CH3:19])[O:7][C:6]2[CH:8]=[CH:9][C:10]([N+:12]([O-:14])=[O:13])=[CH:11][C:5]=2[N:4]2[C:15](=[O:18])[NH:16][N:17]=[C:3]12.I[CH3:21].[H-].[Na+].O>CN(C=O)C>[CH3:21][N:16]1[C:15](=[O:18])[N:4]2[C:5]3[CH:11]=[C:10]([N+:12]([O-:14])=[O:13])[CH:9]=[CH:8][C:6]=3[O:7][C:2]([CH3:19])([CH3:1])[C:3]2=[N:17]1

Participants

6

Reactant 4

HCID 962WaterHCID 6328Methyl iodideHCID 24758Sodium hydrideHCID 867045424,4-dimethyl-8-nitro-2,4-dihydro-1H-benzo[b][1,2,4]triazolo[4,3-d][1,4]oxazin-1-one

Product 1

HCID 867045432,4,4-trimethyl-8-nitro-2,4-dihydro-1H-benzo[b][1,2,4]triazolo[4,3-d][1,4]oxazin-1-oneYield 92%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

4,4-Dimethyl-8-nitro-2,4-dihydro-1H-benzo[b][1,2,4]triazolo[4,3-d][1,4]oxazin-1-one, iodomethane (73 μL, 1.2 eq.) were dissolved in DMF (4 mL). Sodium hydride (58 mg, 60% suspension in oil, 1.5 eq.) was added to the solution in an ice bath. The reaction mixture was stirred at room temperature for two hours. Water (15 mL) was added to the reaction. White precipitation was filtered and washed with water to give 2,4,4-trimethyl-8-nitro-2,4-dihydro-1H-benzo[b][1,2,4]triazolo[4,3-d][1,4]oxazin-1-one (249 mg, 92% yield in two steps).

Workup

  1. customWhite precipitation
  2. filtrationwas filtered
  3. washwashed with water

Sources & evidence

ORD record
ord-a6be1222eeab4a81be6113d9e6a37228
Source dataset
uspto-grants-2016_04
Patent number
US09321763B2

Reaction notes

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