2-Propanol, reaction products with ammonia, distn. residues → 5-(3-chlorophenyl)-alpha-(1-methyl-1H-imidazol-5-yl)-alpha-(4-methylphenyl)-tetrazolo[1,5-a]quinazoline-7-methanamine hydrate

HRID 1788065Notes

Reaction equation

HRID 1788065 reaction equation
Cl.Cl[C:3]([C:31]1[N:35]([CH3:36])[CH:34]=[N:33][CH:32]=1)([C:24]1[CH:29]=[CH:28][C:27]([CH3:30])=[CH:26][CH:25]=1)[C:4]1[CH:5]=[C:6]2[C:11](=[CH:12][CH:13]=1)[N:10]1[N:14]=[N:15][N:16]=[C:9]1[N:8]=[C:7]2[C:17]1[CH:22]=[CH:21][CH:20]=[C:19]([Cl:23])[CH:18]=1.[NH3:37].CC([OH:41])C>C1COCC1>[OH2:41].[Cl:23][C:19]1[CH:18]=[C:17]([C:7]2[C:6]3[C:11](=[CH:12][CH:13]=[C:4]([C:3]([C:31]4[N:35]([CH3:36])[CH:34]=[N:33][CH:32]=4)([C:24]4[CH:25]=[CH:26][C:27]([CH3:30])=[CH:28][CH:29]=4)[NH2:37])[CH:5]=3)[N:10]3[N:14]=[N:15][N:16]=[C:9]3[N:8]=2)[CH:22]=[CH:21][CH:20]=1

Participants

4

Reactant 2

HCID 183319422-Propanol, reaction products with ammonia, distn. residuesHCID 1317273757-[chloro(1-methyl-1H-imidazol-5-yl)(4-methylphenyl)methyl]-5-(3-chlorophenyl)-tetrazolo[1,5-a]quinazoline. hydrochloride

Product 1

HCID 688609215-(3-chlorophenyl)-alpha-(1-methyl-1H-imidazol-5-yl)-alpha-(4-methylphenyl)-tetrazolo[1,5-a]quinazoline-7-methanamine hydrateYield 33%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
5 °C

Procedure

A mixture of intermediate 26 (0.0083 mol) in THF (80 ml) was cooled to 5° C. under N2 flow. NH3/iPrOH (80 ml) was added dropwise. The mixture was stirred at 5° C. for 1 hours, then brought to room temperature. The mixture was stirred at room temperature overnight, poured out into ice water and extracted with DCM. The organic layer was separated, washed with water, 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 96/4/0.2). The pure fractions were collected and the solvent was evaporated. The residue was crystallized from CH3CN. The precipitate was filtered off and dried, yielding 1.37 g (33%) of 5-(3-chlorophenyl)-α-(1-methyl-1H-imidazol-5-yl)-α-(4-methylphenyl)-tetrazolo[1,5-a]quinazoline-7-methanamine hydrate (1:1) (intermediate 27), mp. 150° C.

Workup

  1. custombrought to room temperature
  2. stirringThe mixture was stirred at room temperature overnight
  3. extractionextracted with DCM
  4. customThe organic layer was separated
  5. washwashed with water
  6. dry with materialdried (MgSO4)
  7. filtrationfiltered
  8. customthe solvent was evaporated
  9. customThe residue was purified by column chromatography over silica gel (15-40 μm) (eluent: DCM/MeOH/NH4OH 96/4/0.2)
  10. customThe pure fractions were collected
  11. customthe solvent was evaporated
  12. customThe residue was crystallized from CH3CN
  13. filtrationThe precipitate was filtered off
  14. customdried

Sources & evidence

ORD record
ord-a3801d7d96d54cd2841fea0fa8ce85b6
Source dataset
uspto-grants-2009_03
Patent number
US07511138B2

Reaction notes

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