Potassium Carbonate → 5-(3-Chloro-phenyl)-3,3-diethyl-1,3-dihydro-indol-2-one

HRID 1760304Notes

Reaction equation

HRID 1760304 reaction equation
Br[C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][CH:10]=1)[NH:7][C:6](=[O:11])[C:5]2([CH2:14][CH3:15])[CH2:12][CH3:13].[Cl:16][C:17]1[CH:18]=[C:19](B(O)O)[CH:20]=[CH:21][CH:22]=1.C(=O)([O-])[O-].[K+].[K+]>C(COC)OC.C(O)C.O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[Cl:16][C:17]1[CH:22]=[C:21]([C:2]2[CH:3]=[C:4]3[C:8](=[CH:9][CH:10]=2)[NH:7][C:6](=[O:11])[C:5]3([CH2:14][CH3:15])[CH2:12][CH3:13])[CH:20]=[CH:19][CH:18]=1

Participants

8

Reactant 3

HCID 11430Potassium CarbonateHCID 2734323(3-Chlorophenyl)boronic acidHCID 219862505-Bromo-3,3-diethyl-1,3-dihydro-2H-indol-2-one

Product 1

HCID 99482465-(3-Chloro-phenyl)-3,3-diethyl-1,3-dihydro-indol-2-oneYield 27%

Reagents, catalysts & solvents 4

HCID 178418397HCID 178418397, compoundCatalystHCID 702EthanolSolventHCID 962WaterSolvent2×HCID 80711,2-DimethoxyethaneSolvent

Procedure

A solution of 5-bromo-1,3-dihydro-3,3-diethyl-[2H]-indol-2-one (2.7 g, 10 mmol), 3-chlorophenylboronic acid (1.6 g, 10 mmol), potassium carbonate (4 g, 30 mmol) and tetrakis(triphenylphosphine)palladium(0) (0.5 g, 0.4 mmol) in dimethoxyethane (100 ml), ethanol (25 ml), and water (25 ml) was heated to reflux for 6 hours. After cooling to room temperature, the mixture was diluted with water and extracted with EtOAc (2×). The combined organic extracts were washed with water, then brine, dried (MgSO4) and evaporated. The residue was purified by column chromatography (SiO2, EtOAc:hexane 1:3) to afford 5-(3-chloro-phenyl)-3,3-diethyl-1,3-dihydro-indol-2-one compound (0.8 g, 27%), m.p. 195-197° C.; 1H-NMR (DMSO-d6) δ 7.70 (t, 1H, J=2 Hz), 7.62-7.60 (m, 1H), 7.58 (d, 1H, J=1.7 Hz), 7.52 (dd, 1H, J=8.1, 2 Hz), 7.43 (t, 1H, J=7.9 Hz), 7.36-7.33 (m, 1H), 6.90 (d, 1H, J=8.1 Hz), 1.87-1.70 (m, 4H) and 0.52 (t, 6H, J=7.4 Hz); MS (+APCI) m/z 300/302 (M−H).

Workup

  1. temperatureto reflux for 6 hours
  2. extractionextracted with EtOAc (2×)
  3. washThe combined organic extracts were washed with water
  4. dry with materialbrine, dried (MgSO4)
  5. customevaporated
  6. customThe residue was purified by column chromatography (SiO2, EtOAc:hexane 1:3)

Sources & evidence

ORD record
ord-b2c838a92194453f998dccdb4d61aeaf
Source dataset
uspto-grants-2005_01
Patent number
US06841568B2

Reaction notes

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