Sodium Azide → 5-(3-chlorophenyl)-alpha-(1-methyl-1H-imidazol-5-yl)-alpha-(4-methylphenyl)-tetrazolo[1,5-a]quinazoline-7-methanol

HRID 1788063Notes

Reaction equation

HRID 1788063 reaction equation
Cl[C:2]1[N:11]=[C:10]([C:12]2[CH:17]=[CH:16][CH:15]=[C:14]([Cl:18])[CH:13]=2)[C:9]2[C:4](=[CH:5][CH:6]=[C:7]([C:19]([C:28]3[N:32]([CH3:33])[CH:31]=[N:30][CH:29]=3)([C:21]3[CH:26]=[CH:25][C:24]([CH3:27])=[CH:23][CH:22]=3)[OH:20])[CH:8]=2)[N:3]=1.[N-:34]=[N+:35]=[N-:36].[Na+]>CN(C=O)C>[Cl:18][C:14]1[CH:13]=[C:12]([C:10]2[C:9]3[C:4](=[CH:5][CH:6]=[C:7]([C:19]([C:28]4[N:32]([CH3:33])[CH:31]=[N:30][CH:29]=4)([C:21]4[CH:26]=[CH:25][C:24]([CH3:27])=[CH:23][CH:22]=4)[OH:20])[CH:8]=3)[N:3]3[N:34]=[N:35][N:36]=[C:2]3[N:11]=2)[CH:17]=[CH:16][CH:15]=1

Participants

4

Reactant 2

HCID 33557Sodium AzideHCID 179761062-chloro-4-(3-chlorophenyl)-alpha-(1-methyl-1H-imidazol-5-yl)-alpha-(4-methylphenyl)-6-quinazolinemethanol

Product 1

HCID 686877095-(3-chlorophenyl)-alpha-(1-methyl-1H-imidazol-5-yl)-alpha-(4-methylphenyl)-tetrazolo[1,5-a]quinazoline-7-methanolYield 72.7%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
90 °C

Procedure

A mixture of intermediate 24 (0.0105 mol) and sodium azide (0.031 mol) in DMF (70 ml) was stirred at 90° C. for 2 hours then cooled and poured out into ice water. The precipitate was filtered and taken up in DCM. The organic layer was washed with water, separated, dried (MgSO4), filtered, and the solvent was evaporated. The residue was purified by column chromatography over silica gel (15-40 μm) (eluent: DCM/MeOH/NH4OH; 95/5/0.1). The pure fractions were collected and the solvent was evaporated, yielding 3.68 g (quantitative) of 5-(3-chlorophenyl)-α-(1-methyl-1H-imidazol-5-yl)-α-(4-methylphenyl)-tetrazolo[1,5-a]quinazoline-7-methanol (intermediate 25), mp. 200° C.

Workup

  1. temperaturethen cooled
  2. filtrationThe precipitate was filtered
  3. washThe organic layer was washed with water
  4. customseparated
  5. dry with materialdried (MgSO4)
  6. filtrationfiltered
  7. customthe solvent was evaporated
  8. customThe residue was purified by column chromatography over silica gel (15-40 μm) (eluent: DCM/MeOH/NH4OH; 95/5/0.1)
  9. customThe pure fractions were collected
  10. customthe solvent was evaporated

Sources & evidence

ORD record
ord-1fc055abe78a4989857da9219b7cb752
Source dataset
uspto-grants-2009_03
Patent number
US07511138B2

Reaction notes

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