Potassium Carbonate → 2-[(8-Chloro-1-phenyl-1,2-dihydro[1,4]oxazino[2,3,4-jk]carbazol-7-yl)oxy]acetonitrile

HRID 2415816Notes

Reaction equation

HRID 2415816 reaction equation
[Cl:1][C:2]1[C:14]([OH:15])=[C:13]2[C:5]([N:6]3[CH:18]([C:19]4[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=4)[CH2:17][O:16][C:8]4[CH:9]=[CH:10][CH:11]=[C:12]2[C:7]3=4)=[CH:4][CH:3]=1.C(=O)([O-])[O-].[K+].[K+].Br[CH2:32][C:33]#[N:34]>CN(C=O)C>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[N:6]3[CH:18]([C:19]4[CH:20]=[CH:21][CH:22]=[CH:23][CH:24]=4)[CH2:17][O:16][C:8]4[CH:9]=[CH:10][CH:11]=[C:12]([C:13]=2[C:14]=1[O:15][CH2:32][C:33]#[N:34])[C:7]3=4

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 11534BromoacetonitrileHCID 121486308-Chloro-1-phenyl-1,2-dihydro[1,4]oxazino[2,3,4-jk]carbazol-7-ol

Product 1

HCID 121486312-[(8-Chloro-1-phenyl-1,2-dihydro[1,4]oxazino[2,3,4-jk]carbazol-7-yl)oxy]acetonitrileYield 90.2%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
85 °C

Procedure

To a mixture of 8-chloro-1-phenyl-1,2-dihydro[1,4]oxazino[2,3,4-jk]carbazol-7-ol (0.286 g, 0.851 mmol) in DMF (5.0 mL) is added potassium carbonate (0.59 g, 4.25 mmol) and bromoacetonitrile (0.3 mL, 4.25 mmol). The mixture is heated at 85° C. for 1 h, then cooled and partitioned between water and Et2O. The organic layer is washed three times with water (50 mL), dried over magnesium sulfate and concentrated. Column chromatography (60 g silica gel) using CH2Cl2/hexane (1/1) as eluent gave 0.2876 g (90%) of 2-[(8-chloro-1-phenyl-1,2-dihydro[1,4]oxazino[2,3,4-jk]carbazol-7-yl)oxy]acetonitrile.

Workup

  1. temperaturecooled
  2. custompartitioned between water and Et2O
  3. washThe organic layer is washed three times with water (50 mL)
  4. dry with materialdried over magnesium sulfate
  5. concentrationconcentrated

Sources & evidence

ORD record
ord-c97342725b104d2493e3db618717c8c2
Source dataset
uspto-grants-2004_11
Patent number
US06821970B2

Reaction notes

Loading…