Acetic Acid → HCID 178420195, compound

HRID 1743050Notes

Reaction equation

HRID 1743050 reaction equation
[N:1]1([CH:6]([C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)[C:7]2[CH:8]=[C:9]([NH2:14])[C:10]([NH2:13])=[CH:11][CH:12]=2)[CH:5]=[CH:4][N:3]=[CH:2]1.C(O)(=O)C.[N:25]([O-])=O.[Na+].C(=O)([O-])O.[Na+]>O>[N:1]1([CH:6]([C:15]2[CH:16]=[CH:17][CH:18]=[CH:19][CH:20]=2)[C:7]2[CH:12]=[CH:11][C:10]3[NH:13][N:25]=[N:14][C:9]=3[CH:8]=2)[CH:5]=[CH:4][N:3]=[CH:2]1

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 516892Sodium BicarbonateHCID 14990928HCID 14990928, compoundHCID 23668193Sodium Nitrite

Product 1

HCID 178420195HCID 178420195, compoundYield 85.3%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent2×

Procedure

To a stirred and cooled (5° C.) solution of 5.2 parts of 4-[(1H-imidazol-1-yl)phenylmethyl]- 1,2-benzenediamine in 4.8 parts of acetic acid and 20 parts of water was added a solution of 1.38 parts of sodium nitrite in 10 parts of water. The whole was stirred for 1 hour at room temperature. The reaction mixture was treated with a sodium hydrogen carbonate solution and the product was extracted with dichloromethane. The extract was dried, filtered and evaporated. The residue was crystallized from 64 parts of ethyl acetate. The product was filtered off and dried. yielding 4.7 parts (85.3%) of 5-[(1H-imidazol-1-yl)phenylmethyl]-1H-benzotriazole; mp. 178.8° C. (comp. 35). All other compounds listed in Tables I and II can be obtained by analogous methods of preparation.

Workup

  1. stirringThe whole was stirred for 1 hour at room temperature
  2. extractionthe product was extracted with dichloromethane
  3. customThe extract was dried
  4. filtrationfiltered
  5. customevaporated
  6. customThe residue was crystallized from 64 parts of ethyl acetate
  7. filtrationThe product was filtered off
  8. customdried

Sources & evidence

ORD record
ord-1a55bf920c3f483ca31fea23f4a41ba4
Source dataset
uspto-grants-1994_08
Patent number
US05342957

Reaction notes

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