Hydrochloric Acid → 2-(4-bromo-2-fluorophenylamino)-N-(2-hydroxyethoxy)-1,5-dimethyl-6-oxo-1,6-dihydropyridine-3-carboxamide

HRID 2068920Notes

Reaction equation

HRID 2068920 reaction equation
[Br:1][C:2]1[CH:7]=[CH:6][C:5]([NH:8][C:9]2[N:10]([CH3:26])[C:11](=[O:25])[C:12]([CH3:24])=[CH:13][C:14]=2[C:15]([NH:17][O:18][CH2:19][CH2:20][O:21]C=C)=[O:16])=[C:4]([F:27])[CH:3]=1.Cl.[OH-].[Na+]>C(O)C.CCOC(C)=O.O>[Br:1][C:2]1[CH:7]=[CH:6][C:5]([NH:8][C:9]2[N:10]([CH3:26])[C:11](=[O:25])[C:12]([CH3:24])=[CH:13][C:14]=2[C:15]([NH:17][O:18][CH2:19][CH2:20][OH:21])=[O:16])=[C:4]([F:27])[CH:3]=1

Participants

7

Reactant 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 866246672-(4-bromo-2-fluorophenylamino)-1,5-dimethyl-6-oxo-N-(2-(vinyloxy)ethoxy)-1,6-dihydropyridine-3-carboxamide

Product 1

HCID 576369252-(4-bromo-2-fluorophenylamino)-N-(2-hydroxyethoxy)-1,5-dimethyl-6-oxo-1,6-dihydropyridine-3-carboxamideYield 96.6%

Reagents, catalysts & solvents 3

HCID 702EthanolSolventHCID 962WaterSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of 2-(4-bromo-2-fluorophenylamino)-1,5-dimethyl-6-oxo-N-(2-(vinyloxy)ethoxy)-1,6-dihydropyridine-3-carboxamide (0.067 g, 0.150 mmol) in ethanol (2 mL) was added aqueous 2 M HCl (0.380 mL, 0.760 mmol). The reaction mixture was stirred for 16 hours at room temperature. The pH of the reaction mixture was adjusted with 1 M NaOH. The reaction mixture was diluted with EtOAc and H2O. The organic layer was separated and washed with saturated NaCl. The combined aqueous layers were back extracted with EtOAc (1×). The combined organic layers were dried (Na2SO4) and concentrated under reduced pressure to yield 0.060 g (94%) pure desired product as an off-white crystalline solid. MS ESI (+) m/z 414, 416 (M+, Br pattern detected); 1H NMR (400 MHz, CDCl3) δ 9.80 (s, 1H), 8.44 (s, 1H), 7.31 (d, 1H), 7.19 (d, 1H), 6.59 (t, 1H), 4.05 (m, 2H), 3.85 (m, 1H), 3.75 (m, 2H), 3.29 (s, 3H), 2.15 (s, 3H).

Workup

  1. customThe organic layer was separated
  2. washwashed with saturated NaCl
  3. extractionThe combined aqueous layers were back extracted with EtOAc (1×)
  4. dry with materialThe combined organic layers were dried (Na2SO4)
  5. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-bb9a2455cfaa40e595f124ada286ffdb
Source dataset
uspto-grants-2012_10
Patent number
US08299076B2

Reaction notes

Loading…