4-Cyano-3-fluorophenyl 1-(triphenylmethyl)imidazol-4-yl ketone → 1-(4-Cyano-3-fluorophenyl)-1-[1-(triphenylmethyl)imidazol-4-yl]ethanol

HRID 278184Notes

Reaction equation

HRID 278184 reaction equation
[C:1]1([C:7]([C:30]2[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=2)([C:24]2[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=2)[N:8]2[CH:12]=[C:11]([C:13]([C:15]3[CH:20]=[CH:19][C:18]([C:21]#[N:22])=[C:17]([F:23])[CH:16]=3)=[O:14])[N:10]=[CH:9]2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[CH3:36][Mg+].[Br-]>C1COCC1.CCOCC>[C:21]([C:18]1[CH:19]=[CH:20][C:15]([C:13]([C:11]2[N:10]=[CH:9][N:8]([C:7]([C:1]3[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=3)([C:24]3[CH:25]=[CH:26][CH:27]=[CH:28][CH:29]=3)[C:30]3[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=3)[CH:12]=2)([OH:14])[CH3:36])=[CH:16][C:17]=1[F:23])#[N:22]

Participants

5

Reactant 2

HCID 545629854-Cyano-3-fluorophenyl 1-(triphenylmethyl)imidazol-4-yl ketoneHCID 178418689HCID 178418689, compound

Product 1

HCID 184336071-(4-Cyano-3-fluorophenyl)-1-[1-(triphenylmethyl)imidazol-4-yl]ethanol

Reagents, catalysts & solvents 2

HCID 3283Diethyl EtherSolventHCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 4-cyano-3-fluorophenyl 1-(triphenylmethyl)imidazol-4-yl ketone from Step E (7.0 g, 15.3 mmol) in dry THF (280 mL), under argon, at −78° C., was added MeMgBr (5.3 mL of a 3.0 M solution in Et2O, 15.9 mmol), dropwise. After 1 hr, the reaction mixture was quenched with sat. aq. NH4Cl (100 mL) and extracted with CH2Cl2 (2×150 mL). The combined organic extracts were dried over MgSO4, filtered, and concentrated in vacuo. The residue was purified by silica gel chromatography, eluting with a gradient of hexane—30% to 50% EtOAc, to yield the titled product as pale solid.

Workup

  1. customthe reaction mixture was quenched with sat. aq. NH4Cl (100 mL)
  2. extractionextracted with CH2Cl2 (2×150 mL)
  3. dry with materialThe combined organic extracts were dried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. customThe residue was purified by silica gel chromatography
  7. washeluting with a gradient of hexane—30% to 50% EtOAc

Sources & evidence

ORD record
ord-8e6831451d4347779cda1f3c884a7951
Source dataset
uspto-grants-2002_03
Patent number
US06358985B1

Reaction notes

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