Potassium Carbonate → HCID 86682279, compound
Reaction equation
[CH3:1][O:2][C:3]([C:5]1[CH:10]=[C:9]([CH3:11])[C:8](Br)=[CH:7][N:6]=1)=[O:4].[O:13]([C:15]1[CH:20]=[CH:19][C:18](B(O)O)=[CH:17][CH:16]=1)[CH3:14].C(=O)([O-])[O-].[K+].[K+]>C1COCC1.[Pd](Cl)Cl.C(P(C(C)(C)C)[C-]1C=CC=C1)(C)(C)C.[C-]1(P(C(C)(C)C)C(C)(C)C)C=CC=C1.[Fe+2]>[CH3:14][O:13][C:15]1[CH:20]=[CH:19][C:18]([C:8]2[C:9]([CH3:11])=[CH:10][C:5]([C:3]([O:2][CH3:1])=[O:4])=[N:6][CH:7]=2)=[CH:17][CH:16]=1Participants
6
Reactant 3
Product 1
Reagents, catalysts & solvents 2
Conditions
- Temperature
- 60 °C
Procedure
To a solution of 5-bromo-4-methylpyridine-2-carboxylic acid methyl ester (2.207 g, 9.59 mmol), 4-methoxylphenylboronic acid (1.604 g, 10.55 mmol) and 1,1′-bis(di-tert-butylphosphino)ferrocene palladium dichloride (0.313 g, 0.480 mmol) in THF (30 mL) was added potassium carbonate (2.0 M in water, 10.1 mL, 20.15 mmol). The mixture was purged with nitrogen and heated at 50° C. for 1 hour and at 60° C. for 5 hours. The reaction was poured into ethyl acetate and was washed with brine, dried over sodium sulfate, filtered and concentrated. It was purified by column chromatography to yield methyl 5-(4-methoxyphenyl)-4-methylpyridine-2-carboxylate (2.47 g, 9.59 mmol) as a pink solid. MS ESI calc'd. for C15H16NO3 [M+H]+ 258.1, found 258.1.
Workup
- customThe mixture was purged with nitrogen
- additionThe reaction was poured into ethyl acetate
- washwas washed with brine
- dry with materialdried over sodium sulfate
- filtrationfiltered
- concentrationconcentrated
- customIt was purified by column chromatography
Sources & evidence
- ORD record
- ord-af38838569084a24bdb6550cfe2434ff
- Source dataset
- uspto-grants-2016_05
- Patent number
- US09346825B2
Reaction notes
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