Boron tribromide → 4-Acetylamino-N-{2-[4-(4-fluorobenzoyl)piperidino]ethyl}-N-(3-hydroxyphenyl)benzamide

HRID 2516

Reaction equation

HRID 2516 reaction equation
[C:1]([NH:4][C:5]1[CH:38]=[CH:37][C:8]([C:9]([N:11]([CH2:20][CH2:21][N:22]2[CH2:27][CH2:26][CH:25]([C:28](=[O:36])[C:29]3[CH:34]=[CH:33][C:32]([F:35])=[CH:31][CH:30]=3)[CH2:24][CH2:23]2)[C:12]2[CH:17]=[CH:16][CH:15]=[C:14]([O:18]C)[CH:13]=2)=[O:10])=[CH:7][CH:6]=1)(=[O:3])[CH3:2].B(Br)(Br)Br.C(=O)(O)[O-].[Na+]>C(Cl)Cl>[C:1]([NH:4][C:5]1[CH:38]=[CH:37][C:8]([C:9]([N:11]([CH2:20][CH2:21][N:22]2[CH2:23][CH2:24][CH:25]([C:28](=[O:36])[C:29]3[CH:34]=[CH:33][C:32]([F:35])=[CH:31][CH:30]=3)[CH2:26][CH2:27]2)[C:12]2[CH:17]=[CH:16][CH:15]=[C:14]([OH:18])[CH:13]=2)=[O:10])=[CH:7][CH:6]=1)(=[O:3])[CH3:2]

Participants

5

Reactant 3

HCID 25134Boron tribromideHCID 516892Sodium BicarbonateHCID 196899044-Acetylamino-N-{2-[4-(4-fluorobenzoyl)piperidino]ethyl}-N-(3-methoxyphenyl)benzamide

Product 1

HCID 196897984-Acetylamino-N-{2-[4-(4-fluorobenzoyl)piperidino]ethyl}-N-(3-hydroxyphenyl)benzamideYield 76.7%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

4-Acetylamino-N-{2-[4-(4-fluorobenzoyl)piperidino]ethyl}-N-(3-methoxyphenyl)benzamide (50.0 mg, 0.10 mmol) was dissolved in methylene chloride (3.0 ml) to which was subsequently added a methylene chloride solution (1 ml) of boron tribromide (0.018 ml, 0.19 mmol) at 0° C. After 12 hours of stirring at 0° C. to room temperature, the reaction solution was mixed with saturated sodium bicarbonate aqueous solution and extracted with ethyl acetate. The resulting organic layer was washed with saturated sodium bicarbonate aqueous solution and saturated brine, and dried on anhydrous sodium sulfate. Thereafter, the solvent was distilled off under a reduced pressure, and the resulting residue was purified by a silica gel column chromatography (ethyl acetate-chloroform:methanol=10:1) to obtain 37.3 mg (76.7%) of the title compound in a light yellow amorphous form.

Workup

  1. extractionextracted with ethyl acetate
  2. washThe resulting organic layer was washed with saturated sodium bicarbonate aqueous solution and saturated brine
  3. dry with materialdried on anhydrous sodium sulfate
  4. distillationThereafter, the solvent was distilled off under a reduced pressure
  5. customthe resulting residue was purified by a silica gel column chromatography (ethyl acetate-chloroform:methanol=10:1)

Sources & evidence

ORD record
ord-afe5cbc25fd340cf8536ac9ee64ce538
Source dataset
uspto-grants-1998_03
Patent number
US05728835

Linked notes

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