2,3-Dichloro-5,6-dicyano-1,4-benzoquinone → 2-(Tert-butyl)-6-nitro-1H-indole

HRID 1804907Notes

Reaction equation

HRID 1804907 reaction equation
[C:1]([CH:5]1[CH2:13][C:12]2[C:7](=[CH:8][C:9]([N+:14]([O-:16])=[O:15])=[CH:10][CH:11]=2)[NH:6]1)([CH3:4])([CH3:3])[CH3:2].C(C1C(=O)C(Cl)=C(Cl)C(=O)C=1C#N)#N>O1CCOCC1>[C:1]([C:5]1[NH:6][C:7]2[C:12]([CH:13]=1)=[CH:11][CH:10]=[C:9]([N+:14]([O-:16])=[O:15])[CH:8]=2)([CH3:4])([CH3:2])[CH3:3]

Participants

4

Reactant 2

HCID 67752,3-Dichloro-5,6-dicyano-1,4-benzoquinoneHCID 574701952-(tert-Butyl)-6-nitroindoline

Product 1

HCID 574701962-(Tert-butyl)-6-nitro-1H-indoleYield 80.6%

Reagents, catalysts & solvents 1

HCID 312751,4-DioxaneSolvent

Procedure

To a solution of 2-tert-butyl-6-nitro-2,3-dihydro-1H-indole (2.0 g, 9.1 mmol) in 1,4-dioxane (20 mL) was added DDQ at room temperature. After refluxing for 2.5 h, the mixture was filtered and the filtrate was concentrated under vacuum. The residue was purified by column chromatography to give 2-tert-butyl-6-nitro-1H-indole (1.6 g, 80%).

Workup

  1. temperatureAfter refluxing for 2.5 h
  2. filtrationthe mixture was filtered
  3. concentrationthe filtrate was concentrated under vacuum
  4. customThe residue was purified by column chromatography

Sources & evidence

ORD record
ord-7b462d9982a145219fabcfcf29048590
Source dataset
uspto-grants-2013_01
Patent number
US08354427B2

Reaction notes

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