Dimethylformamide → 6-(3-Phenylpropoxy)-2-(2-pyridyl)-4H-1,3-benzothiazine-4-one

HRID 499364Notes

Reaction equation

HRID 499364 reaction equation
[OH:1][C:2]1[CH:3]=[CH:4][C:5]2[S:10][C:9]([C:11]3[CH:16]=[CH:15][CH:14]=[CH:13][N:12]=3)=[N:8][C:7](=[O:17])[C:6]=2[CH:18]=1.Br[CH2:20][CH2:21][CH2:22][C:23]1[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=1.C(=O)([O-])[O-].[K+].[K+].CN(C=O)C>O>[C:23]1([CH2:22][CH2:21][CH2:20][O:1][C:2]2[CH:3]=[CH:4][C:5]3[S:10][C:9]([C:11]4[CH:16]=[CH:15][CH:14]=[CH:13][N:12]=4)=[N:8][C:7](=[O:17])[C:6]=3[CH:18]=2)[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=1

Participants

6

Reactant 4

HCID 6228DimethylformamideHCID 11430Potassium CarbonateHCID 12503(3-Bromopropyl)benzeneHCID 229394706-hydroxy-2-(2-pyridyl)-4H-1,3-benzothiazine-4-one

Product 1

HCID 597501196-(3-Phenylpropoxy)-2-(2-pyridyl)-4H-1,3-benzothiazine-4-oneYield 98.6%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A mixture of 6-hydroxy-2-(2-pyridyl)-4H-1,3-benzothiazine-4-one (0.35 g, 1.3 mmol), 1-bromo-3-phenylpropane (0.86 g, 4.3 mmol) and potassium carbonate (0.38 g, 2.7 mmol) and DMF (10 ml) was stirred at room temperature for 20 hrs. The reaction mixture was diluted with water and extracted with ethyl acetate. The extract was washed with water and dried. The solvent was evaporated under reduced pressure. The obtained crystals were recrystallized from tetrahydrofuran-hexane to give the titled compound (0.48 g, 92%).

Workup

  1. extractionextracted with ethyl acetate
  2. washThe extract was washed with water
  3. customdried
  4. customThe solvent was evaporated under reduced pressure
  5. customThe obtained crystals were recrystallized from tetrahydrofuran-hexane

Sources & evidence

ORD record
ord-580202ea30da44498bb684e0116059a2
Source dataset
uspto-grants-2010_08
Patent number
US07767665B2

Reaction notes

Loading…