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

HRID 6993Notes

Reaction equation

HRID 6993 reaction equation
Br[C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][CH:10]=1)[NH:7][C:6](=[O:11])[CH2:5]2.[Cl:12][C:13]1[CH:14]=[C:15](B(O)O)[CH:16]=[CH:17][CH:18]=1.C(=O)([O-])[O-].[Na+].[Na+]>C(COC)OC.O.[Pd].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>[Cl:12][C:13]1[CH:18]=[C:17]([C:2]2[CH:3]=[C:4]3[C:8](=[CH:9][CH:10]=2)[NH:7][C:6](=[O:11])[CH2:5]3)[CH:16]=[CH:15][CH:14]=1

Participants

7

Reactant 3

HCID 10340Sodium CarbonateHCID 6111935-Bromo-2-oxindoleHCID 2734323(3-Chlorophenyl)boronic acid

Product 1

HCID 98377135-(3-Chloro-phenyl)-1,3-dihydro-indol-2-oneYield 86%

Reagents, catalysts & solvents 3

HCID 11979704Tetrakis(triphenylphosphine)palladiumCatalystHCID 962WaterSolvent2×HCID 80711,2-DimethoxyethaneSolvent

Procedure

A solution of the 5-bromoxindole (0.5 g, 2.4 mmol) and tetrakis(triphenylphosphine) palladium (0.14 g, 0.12 mmol) in dimethoxyethane (10 cm3) was stirred under N2 for 20 min. To this mixture was then added 3-chlorophenylboronic acid (0.44 g, 2.83 mmol) and sodium carbonate (0.75 g, 7.1 mmol) in water (4 cm3). The solution was brought to reflux for 6 h then cooled to RT, poured into water and extracted with EtOAc (×3). The combined organic extracts were washed with water, brine, dried (MgSO4), and evaporated. The residue was purified by column chromatography (SiO2, ethyl acetate: hexane 1:3) to afford the title compound (0.49 g, 2.0 mmol, 86%) as a tan solid: m.p. 169–171 ° C., 1H NMR (THF-d8) δ 3.45 (s, 2H), 6.85 (d, 1H J=8.1 Hz), 7.25 (d, J=8.0 Hz, 1H), 7.35 (dd, J=7.8, 7.8Hz, 1H), 7.43 (d, J=8.1 Hz, 1H), 7.49 (d, J=7.8Hz, 1H), 7.50 (s, 1H), 7.59 (dd, J=1.78, 1.78 Hz, 1H), 9.5 (br s, 1H); 13C NMR (THF-d8) δ 36.39 (t), 109.80, 123.97, 125.55, 127.19 (d), 127.68 (s), 130.89 (d), 133.73, 135.29, 144.23, 145.09, 176.45 (s); MS (EI) m/z 243, 245 (M)+; Anal. (C14H10ClNO) C, H, N.

Workup

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

Sources & evidence

ORD record
ord-c09160befb0a446b9eccd6a4f009836e
Source dataset
uspto-grants-2006_08
Patent number
US07084168B2

Reaction notes

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