Potassium Carbonate → HCID 89762127, compound

HRID 528662Notes

Reaction equation

HRID 528662 reaction equation
[OH:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[N:8]1[CH2:13][CH2:12][O:11][C:10]2[CH:14]=[C:15]([S:18]([N:21]([CH2:27][C:28]3[CH:33]=[CH:32][C:31]([O:34][CH3:35])=[CH:30][CH:29]=3)[C:22]3[S:23][CH:24]=[CH:25][N:26]=3)(=[O:20])=[O:19])[CH:16]=[CH:17][C:9]1=2.Br[CH2:37][C:38]([NH2:40])=[O:39].C(=O)([O-])[O-].[K+].[K+]>CN(C=O)C.O>[CH3:35][O:34][C:31]1[CH:30]=[CH:29][C:28]([CH2:27][N:21]([C:22]2[S:23][CH:24]=[CH:25][N:26]=2)[S:18]([C:15]2[CH:16]=[CH:17][C:9]3[N:8]([C:3]4[CH:4]=[CH:5][CH:6]=[CH:7][C:2]=4[O:1][CH2:37][C:38]([NH2:40])=[O:39])[CH2:13][CH2:12][O:11][C:10]=3[CH:14]=2)(=[O:19])=[O:20])=[CH:33][CH:32]=1

Participants

6

Reactant 3

HCID 11430Potassium CarbonateHCID 696322-BromoacetamideHCID 89761693HCID 89761693, compound

Product 1

HCID 89762127HCID 89762127, compoundYield 49%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Conditions

Temperature
80 °C

Procedure

To a solution of 4-(2-hydroxyphenyl)-N-(4-methoxybenzyl)-N-(thiazol-2-yl)-3,4-dihydro-2H-benzo[b][1,4]oxazine-7-sulfonamide (550 mg, 1.080 mmol), 2-bromoacetamide (704 mg, 5.108 mmol, Aldrich) in DMF (10 mL) was added potassium carbonate (528 mg, 3.83 mmol). The reaction mixture was heated at 80° C. for 12 h. After completion, the reaction mixture was cooled to room temperature, diluted with water (50 mL) and extracted with ethyl acetate (2×50 mL). The combined organic layer was washed with water (50 mL), dried over sodium sulfate and concentrated under reduced pressure to obtain the crude material which was purified by combiflash column chromatography (column size: 12 g; elution: 0-60% ethyl acetate in hexane) to get 2-(2-(7-(N-(4-methoxybenzyl)-N-(thiazol-2-yl)sulfamoyl)-2H-benzo[b][1,4]oxazin-4(3H)-yl)phenoxy)acetamide (300 mg, 49.0%). MS (ESI, positive ion) m/z; 567.1 (M+1)

Workup

  1. temperatureAfter completion, the reaction mixture was cooled to room temperature
  2. extractionextracted with ethyl acetate (2×50 mL)
  3. washThe combined organic layer was washed with water (50 mL)
  4. dry with materialdried over sodium sulfate
  5. concentrationconcentrated under reduced pressure
  6. customto obtain the crude material which
  7. customwas purified by combiflash column chromatography (column size: 12 g; elution: 0-60% ethyl acetate in hexane)

Sources & evidence

ORD record
ord-7d473b68a44f495fb9d6d35993d5068a
Source dataset
uspto-grants-2016_05
Patent number
US09346798B2

Reaction notes

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