5-Bromo-2-methoxy-3-methylpyridine → 2,2,2-Trifluoro-1-[1-(4-fluorophenyl)-1H-indazol-5-yl]-1-(5-methyl-6-methoxypyridin-3-yl)ethanol

HRID 244412Notes

Reaction equation

HRID 244412 reaction equation
Br[C:2]1[CH:3]=[C:4]([CH3:10])[C:5]([O:8][CH3:9])=[N:6][CH:7]=1.C([Li])CCC.[F:16][C:17]([F:37])([F:36])[C:18]([C:20]1[CH:21]=[C:22]2[C:26](=[CH:27][CH:28]=1)[N:25]([C:29]1[CH:34]=[CH:33][C:32]([F:35])=[CH:31][CH:30]=1)[N:24]=[CH:23]2)=[O:19]>C1COCC1.CCOCC>[F:37][C:17]([F:16])([F:36])[C:18]([C:20]1[CH:21]=[C:22]2[C:26](=[CH:27][CH:28]=1)[N:25]([C:29]1[CH:34]=[CH:33][C:32]([F:35])=[CH:31][CH:30]=1)[N:24]=[CH:23]2)([C:2]1[CH:7]=[N:6][C:5]([O:8][CH3:9])=[C:4]([CH3:10])[CH:3]=1)[OH:19]

Participants

6

Reactant 3

HCID 225911765-Bromo-2-methoxy-3-methylpyridineHCID 579432692,2,2-trifluoro-1-[1-(4-fluorophenyl)-1H-indazol-5-yl]ethanoneHCID 178418339Butyllithium

Product 1

HCID 594373112,2,2-Trifluoro-1-[1-(4-fluorophenyl)-1H-indazol-5-yl]-1-(5-methyl-6-methoxypyridin-3-yl)ethanol

Reagents, catalysts & solvents 2

HCID 3283Diethyl EtherSolventHCID 8028TetrahydrofuranSolvent2×

Procedure

To a chilled (−78° C.) solution of 5-bromo-3-methyl-2-methoxypyridine (1.56 mmol) in 2 mL THF was added dropwise n-butyllithium (1.71 mmol from a 2.5 M solution in hexanes). The mixture was stirred for 30 minutes and then 2,2,2-trifluoro-1-[1-(4-fluorophenyl)-1H-indazol-5-yl]ethanone (1.39 mmol) in 3 mL THF was added. After 30 minutes, the mixture was diluted with ether and quenched with aqueous ammonium chloride. The organic layer was washed with brine and dried over magnesium sulfate. Removal of the volatiles in vacuo provided a residue which was purified by Combiflash chromatography using ethyl acetate-hexane. The product-rich fractions were concentrated in vacuo to provide the title compound.

Workup

  1. waitAfter 30 minutes
  2. customquenched with aqueous ammonium chloride
  3. washThe organic layer was washed with brine
  4. dry with materialdried over magnesium sulfate
  5. customRemoval of the volatiles in vacuo
  6. customprovided a residue which
  7. customwas purified by Combiflash chromatography
  8. concentrationThe product-rich fractions were concentrated in vacuo

Sources & evidence

ORD record
ord-939a2e28c56e43a1b8be58edd9104075
Source dataset
uspto-grants-2014_02
Patent number
US08658637B2

Reaction notes

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