Benzoyl chloride → HCID 10131568, compound

HRID 1292457Notes

Reaction equation

HRID 1292457 reaction equation
Cl.[NH:2]1[CH2:7][CH2:6][C:5]2([C:11]3[NH:12][C:13]4[CH:14]=[CH:15][CH:16]=[CH:17][C:18]=4[C:10]=3[CH2:9][CH2:8]2)[CH2:4][CH2:3]1.C(=O)([O-])[O-].[K+].[K+].[C:25](Cl)(=[O:32])[C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1.C(OCC)(=O)C>C(#N)C>[C:25]([N:2]1[CH2:3][CH2:4][C:5]2([C:11]3[NH:12][C:13]4[CH:14]=[CH:15][CH:16]=[CH:17][C:18]=4[C:10]=3[CH2:9][CH2:8]2)[CH2:6][CH2:7]1)(=[O:32])[C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1

Participants

6

Reactant 4

HCID 7412Benzoyl chlorideHCID 8857Ethyl AcetateHCID 11430Potassium CarbonateHCID 18915246HCID 18915246, compound

Product 1

HCID 10131568HCID 10131568, compoundYield 34%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

To a solution of 1,4-dihydrospiro[cyclopent[b]indole-3(2H),4'-piperidine] hydrochloride (1.0 g) and potassium carbonate (0.8 g) in acetonitrile (10 ml) was added benzoyl chloride (0.5g), under nitrogen, with stirring. The reaction mixture was heated under reflux for 5 hrs and allowed to cool to ambient temperature. Ethyl acetate (200 ml) was added, and the mixture was washed with water and saturated sodium hydroxide solution, dried over anhydrous magnesium sulfate, filtered and the filtrate was concentrated in vacuo. The residue was flash chromatographed (silica gel), eluting with 0.5% methanol/dichloromethane. The appropriate fractions were collected and concentrated to give 0.40 g (33%) of product, mp 231°-232° C.

Workup

  1. temperatureThe reaction mixture was heated
  2. temperatureunder reflux for 5 hrs
  3. washthe mixture was washed with water and saturated sodium hydroxide solution
  4. dry with materialdried over anhydrous magnesium sulfate
  5. filtrationfiltered
  6. concentrationthe filtrate was concentrated in vacuo
  7. customchromatographed (silica gel)
  8. washeluting with 0.5% methanol/dichloromethane
  9. customThe appropriate fractions were collected
  10. concentrationconcentrated

Sources & evidence

ORD record
ord-879b590fcaba4c4cb509514c8228f094
Source dataset
uspto-grants-1998_05
Patent number
US05756743

Reaction notes

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