Diazene, (nitrophenyl)phenyl-, (E)- → 2H-Benzotriazole, 2-phenyl-

HRID 2082165

Reaction equation

HRID 2082165 reaction equation
[N+:1]([C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][C:5]=1[N:10]=[N:11][C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1)([O-])=O.[H][H]>O>[C:12]1([N:11]2[N:10]=[C:5]3[CH:6]=[CH:7][CH:8]=[CH:9][C:4]3=[N:1]2)[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1

Participants

4

Reactant 2

HCID 142206Diazene, (nitrophenyl)phenyl-, (E)-HCID 178418361HCID 178418361, compound2×

Product 1

HCID 1540962H-Benzotriazole, 2-phenyl-

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

An o-nitroazobenzene derivative which is selected as a starting material is dissolved in a solvent contained in a reaction vessel into which water, a hydrogenation catalyst and a basic substance are then placed. After the air in the reaction vessel has been replaced by hydrogen, a given amount of hydrogen is charged into the reaction vessel, and the reaction is then allowed to proceed under atmospheric pressure or a given pressure at a temperature of room temperature to 170° C. under agitation. After the reaction has been completed, the catalyst is filtered off, the solvent layer is washed with water, and the solvent is distilled off. The crude product is then purified by recrystallization to obtain the corresponding 2-phenylbenzotriazole as a pure product.

Workup

  1. dissolutionis dissolved in a solvent
  2. customat a temperature of room temperature to 170° C.
  3. filtrationthe catalyst is filtered off
  4. washthe solvent layer is washed with water
  5. distillationthe solvent is distilled off
  6. customThe crude product is then purified by recrystallization

Sources & evidence

ORD record
ord-88b7025d56dd4c5e9ade8f6aa450f8fa
Source dataset
uspto-grants-1993_02
Patent number
US05187289

Linked notes

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