Nitrobenzene → 8-Methoxy-6,6-dimethyl-11-oxo-6,11-dihydro-5H-benzo[b]carbazole-3-carbonitrile

HRID 61691Notes

Reaction equation

HRID 61691 reaction equation
[N+](C1C=CC=CC=1)([O-])=O.[Cl-].[Al+3].[Cl-].[Cl-].[CH3:14][O:15][C:16]1[CH:24]=[CH:23][C:19]([C:20](Cl)=[O:21])=[CH:18][CH:17]=1.O[C:26]([C:29]1[NH:30][C:31]2[C:36]([CH:37]=1)=[CH:35][CH:34]=[C:33]([C:38]#[N:39])[CH:32]=2)([CH3:28])[CH3:27]>O>[CH3:14][O:15][C:16]1[CH:24]=[CH:23][C:19]2[C:20](=[O:21])[C:37]3[C:36]4[C:31](=[CH:32][C:33]([C:38]#[N:39])=[CH:34][CH:35]=4)[NH:30][C:29]=3[C:26]([CH3:28])([CH3:27])[C:18]=2[CH:17]=1

Participants

6

Reactant 4

HCID 7416NitrobenzeneHCID 7477p-Anisoyl chlorideHCID 6451240Aluminum(III) ChlorideHCID 668341732-(2-hydroxypropan-2-yl)-1H-indole-6-carbonitrile

Product 1

HCID 668341058-Methoxy-6,6-dimethyl-11-oxo-6,11-dihydro-5H-benzo[b]carbazole-3-carbonitrileYield 40.1%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

(Method 3) To nitrobenzene (5 ml) and aluminum chloride (400 mg, 3 mmol), 4-methoxybenzoyl chloride (400 mg, 2.3 mmol) was added. After stirring for 30 min at room temperature, 2-(1-hydroxy-1-methyl-ethyl)-1H-indole-6-carbonitrile (Compound AA6, 200 mg, 1 mmol) was added followed by stirring at room temperature for 3 hr. Water was added to the reaction solution, which was then extracted with ethyl acetate. The organic layer was dried over sodium sulfate. The drying agent was removed by filtration and the residues obtained after concentration under reduced pressure were purified by silica gel column chromatography (hexane/ethyl acetate) to obtain the title compound (127 mg, 40%).

Workup

  1. stirringby stirring at room temperature for 3 hr
  2. extractionwas then extracted with ethyl acetate
  3. dry with materialThe organic layer was dried over sodium sulfate
  4. customThe drying agent was removed by filtration
  5. customthe residues obtained
  6. concentrationafter concentration under reduced pressure
  7. customwere purified by silica gel column chromatography (hexane/ethyl acetate)

Sources & evidence

ORD record
ord-8362a13e30874b68abe42b0387790014
Source dataset
uspto-grants-2016_09
Patent number
US09440922B2

Reaction notes

Loading…