Sodium Carbonate → HCID 59631296, compound

HRID 1431594Notes

Reaction equation

Cl[C:2]1[C:11]([CH3:12])=[C:10]([Cl:13])[C:9]2[C:4](=[CH:5][C:6]([F:15])=[CH:7][C:8]=2[F:14])[N:3]=1.[CH3:16][C:17]1[CH:18]=[C:19](B(O)O)[CH:20]=[N:21][CH:22]=1.C(=O)([O-])[O-].[Na+].[Na+].B(O)O>Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.O.O1CCOCC1>[Cl:13][C:10]1[C:9]2[C:4](=[CH:5][C:6]([F:15])=[CH:7][C:8]=2[F:14])[N:3]=[C:2]([C:19]2[CH:20]=[N:21][CH:22]=[C:17]([CH3:16])[CH:18]=2)[C:11]=1[CH3:12]

Participants

Conditions

Temperature: 95 °C

Procedure

A screw-cap vial was charged with 2,4-dichloro-5,7-difluoro-3-methylquinoline (600 mg, 2.42 mmol), 5-methylpyridine-3-boronic acid (348 mg, 2.54 mmol), dichlorobis(triphenylphosphine)palladium (II) (170 mg, 0.24 mmol), sodium carbonate (769 mg, 7.26 mmol), 1,4-dioxane (6.5 mL), and water (1.6 mL). The mixture was stirred at 95° C. for 22 h, then 0.2 additional equivalents of the aforementioned boronic acid were added and the reaction was continued for 18 h. Upon completion, the reaction was cooled to rt and partitioned between EtOAc and water. The organic layer was washed with brine, dried over magnesium sulfate, and cond. The resulting crude product was purified by flash chromatography (silica gel, 0-30% EtOAc in hexanes), affording 4-chloro-5,7-difluoro-3-methyl-2-(5-methylpyridin-3-yl)quinoline. Mass Spectrum (ESI) m/e=305.0 (M+1).

Workup

waitthe reaction was continued for 18 h
temperatureUpon completion, the reaction was cooled to rt
custompartitioned between EtOAc and water
washThe organic layer was washed with brine
dry with materialdried over magnesium sulfate, and cond
customThe resulting crude product was purified by flash chromatography (silica gel, 0-30% EtOAc in hexanes)

Sources & evidence

ORD record: ord-261683578fb14f68ac77e232d366aefa
Source dataset: uspto-grants-2015_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08940724B2

Reaction notes

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