Hydrochloric Acid → HCID 178441455, compound

HRID 1655479Notes

Reaction equation

HRID 1655479 reaction equation
[CH2:1]([C:5]1[N:9]([CH2:10][C:11]2[CH:16]=[CH:15][C:14]([C:17]3[CH:22]=[CH:21][CH:20]=[CH:19][C:18]=3[C:23]#[N:24])=[CH:13][CH:12]=2)[C:8]2[C:25]([CH3:29])=[CH:26][CH:27]=[CH:28][C:7]=2[N:6]=1)[CH2:2][CH2:3][CH3:4].[N-:30]=[N+:31]=[N-:32].[Na+].[Cl-].[NH4+].Cl>CN(C=O)C.O>[CH2:1]([C:5]1[N:9]([CH2:10][C:11]2[CH:16]=[CH:15][C:14]([C:17]3[CH:22]=[CH:21][CH:20]=[CH:19][C:18]=3[C:23]3[NH:32][N:31]=[N:30][N:24]=3)=[CH:13][CH:12]=2)[C:8]2[C:25]([CH3:29])=[CH:26][CH:27]=[CH:28][C:7]=2[N:6]=1)[CH2:2][CH2:3][CH3:4]

Participants

7

Reactant 4

HCID 313Hydrochloric AcidHCID 25517Ammonium ChlorideHCID 33557Sodium AzideHCID 19792145HCID 19792145, compound

Product 1

HCID 178441455HCID 178441455, compound

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Conditions

Temperature
115 °C

Procedure

A mixture of 2-butyl-1-[(2'-cyanobiphenyl-4-yl)methyl]-7-methylbenzimidazole (0,5 g), sodium azide (1.3 g) and ammonium chloride (1.1 g) in DMF (5 ml) was stirred for 3.5 days at 110-120° C. To the reaction mixture was added water, which was made acidic (pH 3-4) with 1N-HCl, followed by extraction with ethyl acetate. The organic layer was washed with water and dried. The solvent was distilled off, and the residue was purified by column chromatography on silica gel to give crystals. Recrystallization from ethyl acetate-methanol afforded colorless crystals (0.36 g, 62%),

Workup

  1. extractionfollowed by extraction with ethyl acetate
  2. washThe organic layer was washed with water
  3. customdried
  4. distillationThe solvent was distilled off
  5. customthe residue was purified by column chromatography on silica gel
  6. customto give crystals
  7. customRecrystallization from ethyl acetate-methanol afforded colorless crystals (0.36 g, 62%)

Sources & evidence

ORD record
ord-49811bd16a82404d9e36a0d9b0b39a45
Source dataset
uspto-grants-1993_10
Patent number
US05250554

Reaction notes

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