Sodium borohydride → 3-[(3,4-Dichlorophenyl)methyl]-2-(1-methylethyl)-3,4,5,6,7,8-hexahydrocyclohepta[d]imidazol-4-ol

HRID 1946474Notes

Reaction equation

HRID 1946474 reaction equation
[BH4-].[Na+].[Cl:3][C:4]1[CH:5]=[C:6]([CH2:11][N:12]2[C:16]3[C:17](=[O:22])[CH2:18][CH2:19][CH2:20][CH2:21][C:15]=3[N:14]=[C:13]2[CH:23]([CH3:25])[CH3:24])[CH:7]=[CH:8][C:9]=1[Cl:10]>ClCCl.CO>[Cl:3][C:4]1[CH:5]=[C:6]([CH2:11][N:12]2[C:16]3[CH:17]([OH:22])[CH2:18][CH2:19][CH2:20][CH2:21][C:15]=3[N:14]=[C:13]2[CH:23]([CH3:25])[CH3:24])[CH:7]=[CH:8][C:9]=1[Cl:10]

Participants

5

Reactant 2

HCID 4311764Sodium borohydrideHCID 584601573-[(3,4-dichlorophenyl)methyl]-2-(1-methylethyl)-5,6,7,8-tetrahydrocyclohepta[d]imidazol-4(3H)-one

Product 1

HCID 584601473-[(3,4-Dichlorophenyl)methyl]-2-(1-methylethyl)-3,4,5,6,7,8-hexahydrocyclohepta[d]imidazol-4-olYield 94.7%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 6344DichloromethaneSolvent

Procedure

Sodium borohydride (204 mg) was added to a stirred solution of Intermediate 7 (630 mg) in dichloromethane (2 mL) and methanol (2 mL). The reaction mixture was stirred for 3 hours. The reaction mixture was partitioned between EtOAc (50 ml) and water (30 ml). The two phases were separated and the aqueous phase was extracted again with EtOAc (30 ml). The phases were separated; the organic extracts were combined, dried (hydrophobic frit) and concentrated under vacuum to give the title compound (600 mg). LC/MS MH+ 353/355, Rt 1.13 min (2 minute run).

Workup

  1. customThe reaction mixture was partitioned between EtOAc (50 ml) and water (30 ml)
  2. customThe two phases were separated
  3. extractionthe aqueous phase was extracted again with EtOAc (30 ml)
  4. customThe phases were separated
  5. customdried (hydrophobic frit)
  6. concentrationconcentrated under vacuum

Sources & evidence

ORD record
ord-b5c25d47e394482c9d3a5d4d89a20562
Source dataset
uspto-grants-2013_03
Patent number
US08399444B2

Reaction notes

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