Hydrochloric Acid → 1-(2,2-difluorobenzo[d][1,3]dioxol-5-yl)-N-(4-methyl-6-(4-methyl-6-oxo-1,6-dihydropyridin-3-yl)pyridin-2-yl)cyclopropanecarboxamide

HRID 869940Notes

Reaction equation

HRID 869940 reaction equation
[F:1][C:2]1([F:33])[O:6][C:5]2[CH:7]=[CH:8][C:9]([C:11]3([C:14]([NH:16][C:17]4[N:22]=[C:21]([C:23]5[CH:24]=[N:25][C:26]([O:30]C)=[CH:27][C:28]=5[CH3:29])[CH:20]=[C:19]([CH3:32])[CH:18]=4)=[O:15])[CH2:13][CH2:12]3)=[CH:10][C:4]=2[O:3]1.Cl>O1CCOCC1>[F:33][C:2]1([F:1])[O:6][C:5]2[CH:7]=[CH:8][C:9]([C:11]3([C:14]([NH:16][C:17]4[CH:18]=[C:19]([CH3:32])[CH:20]=[C:21]([C:23]5[C:28]([CH3:29])=[CH:27][C:26](=[O:30])[NH:25][CH:24]=5)[N:22]=4)=[O:15])[CH2:13][CH2:12]3)=[CH:10][C:4]=2[O:3]1

Participants

4

Reactant 2

HCID 313Hydrochloric AcidHCID 68794099HCID 68794099, compound

Product 1

HCID 710530731-(2,2-difluorobenzo[d][1,3]dioxol-5-yl)-N-(4-methyl-6-(4-methyl-6-oxo-1,6-dihydropyridin-3-yl)pyridin-2-yl)cyclopropanecarboxamideYield 19.2%

Reagents, catalysts & solvents 1

HCID 312751,4-DioxaneSolvent

Conditions

Temperature
90 °C

Procedure

To 1-(2,2-difluorobenzo[d][1,3]dioxol-5-yl)-N-(6′-methoxy-4,4′-dimethyl-2,3′-bipyridin-6-yl)cyclopropanecarboxamide (38 mg, 0.083 mmol) in 1,4-dioxane (1.5 mL) was added aqueous 4 M HCl (225 μL, 0.899 mmol) drop-wise. The reaction was stirred at 90° C. for 1.5 hours. The reaction was allowed to cool down to room temperature and then quenched with Et3N. The solvent was evaporated under reduced pressure. The crude compound was dissolved in ethyl acetate and washed with water (2×) and brine (1×). The organic layer was dried over Na2SO4, filtered and evaporated under reduced pressure. The crude product was purified by column chromatography on silica gel (0-10% methanol in dichloromethans) to yield 1-(2,2-difluorobenzo[d][1,3]dioxol-5-yl)-N-(4-methyl-6-(4-methyl-6-oxo-1,6-dihydropyridin-3-yl)pyridin-2-yl)cyclopropanecarboxamide as a white solid (7 mg, 19%). ESI-MS m/z calc. 439.41. found 440.5 (M+1)+. Retention time 1.60 minutes.

Workup

  1. temperatureto cool down to room temperature
  2. customquenched with Et3N
  3. customThe solvent was evaporated under reduced pressure
  4. dissolutionThe crude compound was dissolved in ethyl acetate
  5. washwashed with water (2×) and brine (1×)
  6. dry with materialThe organic layer was dried over Na2SO4
  7. filtrationfiltered
  8. customevaporated under reduced pressure
  9. customThe crude product was purified by column chromatography on silica gel (0-10% methanol in dichloromethans)

Sources & evidence

ORD record
ord-774764f2a297498fb910908dcb4f6164
Source dataset
uspto-grants-2015_03
Patent number
US08969386B2

Reaction notes

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