Potassium Iodide → HCID 57803037, compound

HRID 2102678Notes

Reaction equation

HRID 2102678 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([CH:14]2[C:22]3[C:17](=[CH:18][C:19]([Cl:23])=[CH:20][CH:21]=3)[NH:16][C:15]2=[O:24])[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[Cl:25][C:26]1[CH:27]=[C:28]([CH:31]=[CH:32][CH:33]=1)[CH2:29]Br.[I-].[K+].C(=O)([O-])[O-].[K+].[K+]>CC(C)=O.C(OCC)(=O)C>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([C:14]2([CH2:29][C:28]3[CH:31]=[CH:32][CH:33]=[C:26]([Cl:25])[CH:27]=3)[C:22]3[C:17](=[CH:18][C:19]([Cl:23])=[CH:20][CH:21]=3)[NH:16][C:15]2=[O:24])[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]

Participants

7

Reactant 4

HCID 4875Potassium IodideHCID 11430Potassium CarbonateHCID 698381-(Bromomethyl)-3-chlorobenzeneHCID 57803061HCID 57803061, compound

Product 1

HCID 57803037HCID 57803037, compound

Reagents, catalysts & solvents 2

HCID 180AcetoneSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
60 °C

Procedure

A mixture of rac-4-(6-chloro-2-oxo-2,3-dihydro-1H-indol-3-yl)-piperidine-1-carboxylic acid tert-butyl ester (0.21 g, 0.6 mmol) (from Example 12b supra), 3-chlorobenzyl bromide (0.15 g, 0.7 mmol) (Aldrich), potassium iodide (0.12 g, 0.71 mmol) and potassium carbonate (0.18 g, 1.3 mmol) in acetone (5 mL) was heated at 60° C. for 8 hours in a capped pressure tube. After cooling, mixture was diluted with ethyl acetate (50 mL) and extracted with water (2×50 mL) and brine (50 mL). Aqueous layers were back washed with ethyl acetate (50 mL). Organic layers were combined, dried (MgSO4), filtered and concentrated. Residue was purified by flash chromatography (Biotage 40S, 3% then 10% ethyl acetate in dichloromethane as solvent). Combined fractions were recrystallized from dichloromethane-hexanes to give rac-4-[6-chloro-3-(3-chloro-benzyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-piperidine-1-carboxylic acid tert-butyl ester as white crystals. (Yield 0.14 g, 49.1%).

Workup

  1. temperatureAfter cooling
  2. extractionextracted with water (2×50 mL) and brine (50 mL)
  3. washAqueous layers were back washed with ethyl acetate (50 mL)
  4. dry with materialdried (MgSO4)
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customResidue was purified by flash chromatography (Biotage 40S, 3%
  8. customCombined fractions were recrystallized from dichloromethane-hexanes

Sources & evidence

ORD record
ord-67fa98cc50844ba78614e9944bb17c28
Source dataset
uspto-grants-2009_08
Patent number
US07576082B2

Reaction notes

Loading…