1,2-Dimethoxyethane → HCID 66788568, compound

HRID 1623551Notes

Reaction equation

HRID 1623551 reaction equation
Br[C:2]1[C:3]([CH:13]2[CH2:15][CH2:14]2)=[C:4]2[C:8](=[CH:9][CH:10]=1)[N:7]([CH3:11])[C:6](=[O:12])[CH2:5]2.[N:16]1[CH:21]=[CH:20][CH:19]=[C:18](B(O)O)[CH:17]=1.COCCOC.C(=O)([O-])[O-].[Na+].[Na+]>ClCCl.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>[CH:13]1([C:3]2[C:2]([C:18]3[CH:17]=[N:16][CH:21]=[CH:20][CH:19]=3)=[CH:10][CH:9]=[C:8]3[C:4]=2[CH2:5][C:6](=[O:12])[N:7]3[CH3:11])[CH2:15][CH2:14]1

Participants

7

Reactant 4

HCID 80711,2-DimethoxyethaneHCID 10340Sodium CarbonateHCID 27343783-Pyridinylboronic acidHCID 66788818HCID 66788818, compound

Product 1

HCID 66788568HCID 66788568, compound

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 6344DichloromethaneSolvent

Conditions

Temperature
130 °C

Procedure

To 5-bromo-4-cyclopropyl-1-methyl-1,3-dihydro-indol-2-one, prepared as described in Example 40c, (320 mg, 1.202 mmol), was added 3-pyridine boronic acid (CAS#1692=25-7, 177 mg, 1.443 mmol), 1,2-dimethoxyethane (7.5 mL), and 2 M aqueous sodium carbonate (1.503 ml, 3.01 mmol). The reaction mixture was degassed and placed under an argon atmosphere, at which time resin bound tetrakis(triphenylphosphine)palladium(0), specifically polystyrene triphenylphosphine palladium (0) [PS—PPh3—Pd(0) (Biotage), 0.11 mmol/g loading, (328 mg, 0.036 mmol)] was added. The reaction vessel was sealed and was heated by microwave irradiation at 130° C. for 4 hours. The reaction mixture was then cooled to room temperature, diluted with dichloromethane and filtered through glass wool. The filtrate was further diluted with saturated aqueous sodium bicarbonate and the layers were separated. The aqueous layer was extracted two times with dichloromethane, and the organic layers were combined, dried over anhydrous sodium sulfate, filtered and concentrated. The resulting residue was purified by silica gel flash chromatography (ethyl acetate-heptane, 10 to 100%) to furnish 4-cyclopropyl-1-methyl-5-pyridin-3-yl-1,3-dihydro-indol-2-one, HRMS: (ESI) m/z 265.1342 (M+H)+; 1H NMR (400 MHz, CD2Cl2) δ ppm 0.12-0.24 (m, 2H), 0.68-0.78 (m, 2H), 1.86-2.00 (m, 1H), 3.19 (s, 3H), 3.59 (s, 2H), 6.80 (d, J=7.8 Hz, 1H), 7.21 (d, J=8.1 Hz, 1H), 7.34 (dd, J=7.7, 4.9 Hz, 1H), 7.73 (d, J=7.6 Hz, 1H), 8.53 (d, J=4.6 Hz, 1H), 8.63 (s, 1H).

Workup

  1. customThe reaction mixture was degassed
  2. additionwas added
  3. customThe reaction vessel was sealed
  4. temperatureThe reaction mixture was then cooled to room temperature
  5. filtrationfiltered through glass wool
  6. additionThe filtrate was further diluted with saturated aqueous sodium bicarbonate
  7. customthe layers were separated
  8. extractionThe aqueous layer was extracted two times with dichloromethane
  9. dry with materialdried over anhydrous sodium sulfate
  10. filtrationfiltered
  11. concentrationconcentrated
  12. customThe resulting residue was purified by silica gel flash chromatography (ethyl acetate-heptane, 10 to 100%)

Sources & evidence

ORD record
ord-0d1538150886465e9cc58b94c633b54d
Source dataset
uspto-grants-2014_07
Patent number
US08778972B2

Reaction notes

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