Water → 3-tert-butoxycarbonyl-7-chloro-6-[3-(3,3-dimethyl-2-oxo-2,3-dihydro-indol-1-yl)-propylthio]-2,3,4,5-tetrahydro-1H-benzo[d]azepine

HRID 911742Notes

Reaction equation

HRID 911742 reaction equation
[OH-].[K+].[C:3]([O:7][C:8]([N:10]1[CH2:16][CH2:15][C:14]2[C:17]([S:22]C(=O)N(C)C)=[C:18]([Cl:21])[CH:19]=[CH:20][C:13]=2[CH2:12][CH2:11]1)=[O:9])([CH3:6])([CH3:5])[CH3:4].Br[CH2:29][CH2:30][CH2:31][N:32]1[C:40]2[C:35](=[CH:36][CH:37]=[CH:38][CH:39]=2)[C:34]([CH3:42])([CH3:41])[C:33]1=[O:43].O>CO>[C:3]([O:7][C:8]([N:10]1[CH2:16][CH2:15][C:14]2[C:17]([S:22][CH2:29][CH2:30][CH2:31][N:32]3[C:40]4[C:35](=[CH:36][CH:37]=[CH:38][CH:39]=4)[C:34]([CH3:42])([CH3:41])[C:33]3=[O:43])=[C:18]([Cl:21])[CH:19]=[CH:20][C:13]=2[CH2:12][CH2:11]1)=[O:9])([CH3:5])([CH3:6])[CH3:4]

Participants

6

Reactant 4

HCID 962WaterHCID 14797Potassium Hydroxide2×HCID 158817591-(3-Bromo-propyl)-1,3-dihydro-3,3-dimethyl-indol-2-oneHCID 576559793-tert-butoxycarbonyl-7-chloro-6-dimethylaminocarbonylthio-2,3,4,5-tetrahydro-1H-benzo[d]azepine

Product 1

HCID 667067043-tert-butoxycarbonyl-7-chloro-6-[3-(3,3-dimethyl-2-oxo-2,3-dihydro-indol-1-yl)-propylthio]-2,3,4,5-tetrahydro-1H-benzo[d]azepine

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

Add potassium hydroxide (170 mg, 3.03 mmol) in one portion to a solution of 3-tert-butoxycarbonyl-7-chloro-6-dimethylcarbamoylthio-2,3,4,5-tetrahydro-1H-benzo[d]azepine (187 mg, 0.49 mmol) in methanol (10 mL). Heat the reaction at reflux under nitrogen overnight. Then add further portion of KOH (867 mg, 15.45 mmol) and heat at reflux for 3 h. Then cool to room temperature and add 1-(3-bromo-propyl)-1,3-dihydro-3,3-dimethyl-indol-2-one (274 mg, 0.97 mmol, prepared by following the procedure described in Perkin 1 2000, 769-774). Stir the reaction at room temperature overnight. Remove solvents in vacuo, add water and extract with diethyl ether (2×50 mL). Combine the organic extracts, wash with water (2×50 mL) and brine (50 mL). Dry over MgSO4 and concentrate in vacuo. Purify by chromatography on silica gel eluting with isohexane/EtOAc (1:0 to 1:1 gradient over 40 min) to give 3-tert-butoxycarbonyl-7-chloro-6-[3-(3,3-dimethyl-2-oxo-2,3-dihydro-indol-1-yl)-propylthio]-2,3,4,5-tetrahydro-1H-benzo[d]azepine as a colourless oil (330 mg), 50% contaminated with 1-(3-methoxypropyl)-1,3-dihydro-3,3-dimethyl-indol-2-one. MS (ES+) m/z: 537 (M+Na)+.

Workup

  1. temperatureHeat
  2. customthe reaction
  3. temperatureat reflux under nitrogen overnight
  4. temperatureheat
  5. temperatureat reflux for 3 h
  6. customprepared
  7. customthe reaction at room temperature overnight
  8. extractionextract with diethyl ether (2×50 mL)
  9. washCombine the organic extracts, wash with water (2×50 mL) and brine (50 mL)
  10. dry with materialDry over MgSO4
  11. concentrationconcentrate in vacuo
  12. customPurify by chromatography on silica gel eluting with isohexane/EtOAc (1:0 to 1:1 gradient over 40 min)

Sources & evidence

ORD record
ord-8ffcb88d257a4baa86aa9dc23362d8bf
Source dataset
uspto-grants-2011_09
Patent number
US08022062B2

Reaction notes

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