Methyl 6-chloropyridine-3-carboxylate → HCID 21914626, compound

HRID 1174616Notes

Reaction equation

HRID 1174616 reaction equation
[CH:1]1([NH:4][C:5](=[O:23])[C:6]2[CH:11]=[C:10]([F:12])[C:9]([CH3:13])=[C:8](B3OC(C)(C)C(C)(C)O3)[CH:7]=2)[CH2:3][CH2:2]1.Cl[C:25]1[CH:34]=[CH:33][C:28]([C:29]([O:31]C)=[O:30])=[CH:27][N:26]=1.C(=O)([O-])O.[Na+]>CC(O)C.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:1]1([NH:4][C:5]([C:6]2[CH:11]=[C:10]([F:12])[C:9]([CH3:13])=[C:8]([C:25]3[CH:34]=[CH:33][C:28]([C:29]([OH:31])=[O:30])=[CH:27][N:26]=3)[CH:7]=2)=[O:23])[CH2:2][CH2:3]1

Participants

6

Reactant 3

HCID 254249Methyl 6-chloropyridine-3-carboxylateHCID 516892Sodium BicarbonateHCID 21914563N-cyclopropyl-3-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzamide2×

Product 1

HCID 21914626HCID 21914626, compound

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 3776IsopropanolSolvent

Conditions

Temperature
90 °C

Procedure

N-Cyclopropyl-5-fluoro-4-methyl-3-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-benzamide (Intermediate 4, 3.2 g), methyl 6-chloronicotinate (1.73 g), tetrakis(triphenylphosphine)palladium (210 mg) and aqueous sodium hydrogen carbonate (1M, 30 ml) were mixed in propan-2-ol (100 ml) and heated at 90° C. for 18 hours. The reaction was allowed to cool and the propan-2-ol removed under vacuum. The residue was partitioned between ethyl acetate and aqueous sodium hydrogen carbonate (1M). The aqueous phase was acidified with hydrochloric acid (2N) and extracted with ethyl acetate (×2). The organic extracts were washed with brine, dried (magnesium sulphate) and reduced to dryness under vacuum. The resulting foam was triturated with ether to give 6-{5-[(cyclopropylamino)carbonyl]-3-fluoro-2-methylphenyl}nicotinic acid as a solid. LCMS: MH+315, retention time 2.87 mins.

Workup

  1. temperatureto cool
  2. customthe propan-2-ol removed under vacuum
  3. customThe residue was partitioned between ethyl acetate and aqueous sodium hydrogen carbonate (1M)
  4. extractionextracted with ethyl acetate (×2)
  5. washThe organic extracts were washed with brine
  6. dry with materialdried (magnesium sulphate)
  7. customThe resulting foam was triturated with ether

Sources & evidence

ORD record
ord-dba5f6e2b6f145daa3d1f105751665aa
Source dataset
uspto-grants-2010_11
Patent number
US07838540B2

Reaction notes

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