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Nitrobenzene → 5-[N-(4-tolyl)amino]acenaphthene

HRID 1952
Notes
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Reaction equation

HRID 1952 reaction equation
[C:1]([NH:4][C:5]1[C:15]2[C:16]3[C:8]([CH2:9][CH2:10][C:11]=3[CH:12]=[CH:13][CH:14]=2)=[CH:7][CH:6]=1)(=O)[CH3:2].IC1C=[CH:22][C:21]([CH3:24])=[CH:20][CH:19]=1.C(=O)([O-])[O-].[K+].[K+].[N+](C1C=CC=CC=1)([O-])=O.[OH-].[K+]>O.[Cu].C(O)CC(C)C>[C:21]1([CH3:24])[CH:20]=[CH:19][C:1]([NH:4][C:5]2[C:15]3[C:16]4[C:8]([CH2:9][CH2:10][C:11]=4[CH:12]=[CH:13][CH:14]=3)=[CH:7][CH:6]=2)=[CH:2][CH:22]=1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

9

Reactant 5

HCID 7416NitrobenzeneHCID 11430Potassium CarbonateHCID 122074-IodotolueneHCID 14797Potassium HydroxideHCID 343948N-Acenaphthen-5-ylacetamide2×

Product 1

HCID 196889145-[N-(4-tolyl)amino]acenaphtheneYield 72.3%

Reagents, catalysts & solvents 3

HCID 23978CopperCatalystHCID 962WaterSolvent2×HCID 31260Isoamyl AlcoholSolvent

Conditions

Temperature
200 °C

Procedure

7.39 g (0.035 mol) of the above prepared 5-(N-acetylamino)acenaphthene was mixed with 10.91 g (0.05 mol) of p-iodo toluene, 0.32 g (0.005 mol) of copper powder, 5.52 g (0.04 mol) of anhydrous potassium carbonate and 10 ml of nitrobenzene, and the mixture was stirred at 200° C. for 6 hours. The reaction was determined to be finished when disappearance of 5-(N-acetylamino)acenaphthene was identified. To the resultant reaction mixture, was added an aqueous solution having 10 ml of isoamyl alcohol and 9.8 g (0.15 mol) of 85% potassium hydroxide dissolved in 10 ml of water, and the resultant mixture was subjected to hydrolysis reaction at 130°-140° C. for 4 hours. After identifying the end of the hydrolysis reaction, 100 ml of water was added thereto, and isoamyl alcohol and nitrobenzene were distilled off by azeotropic distillation. 100 ml of toluene was then added to the remaining material to dissolve the reaction product, and the toluene layer was separated. The toluene layer was washed with 100 ml of water, and was concentrated. An oily product thus obtained was purified by column chromatography (carrier: silica gel, eluent: toluene/hexane=1/4). As this result, 6.56 g (yield: 72.3%, melting point: 96.2°-96.8° C.) of 5-[N-(4-tolyl)amino]acenaphthene was obtained.

Workup

  1. customTo the resultant reaction mixture
  2. additionwas added an aqueous solution
  3. additionwas added
  4. distillationisoamyl alcohol and nitrobenzene were distilled off by azeotropic distillation
  5. addition100 ml of toluene was then added to the remaining material
  6. dissolutionto dissolve the reaction product
  7. customthe toluene layer was separated
  8. washThe toluene layer was washed with 100 ml of water
  9. concentrationwas concentrated
  10. customAn oily product thus obtained
  11. customwas purified by column chromatography (carrier: silica gel, eluent: toluene/hexane=1/4)

Sources & evidence

ORD record
ord-b70ac3636d7b43a287feb3a7f751e2d4
Source dataset
uspto-grants-1998_03
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US05728500

Reaction notes

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