Water → 3-{2-Amino-4-fluoro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)-1,2,3,6-tetrahydropyrimidin-1-yl]phenoxy}-2-(ethoxycarbonyl)methoxypyridine

HRID 1862336Notes

Reaction equation

HRID 1862336 reaction equation
O.[F:2][C:3]1[C:22]([N:23]2[C:28](=[O:29])[CH:27]=[C:26]([C:30]([F:33])([F:32])[F:31])[N:25]([CH3:34])[C:24]2=[O:35])=[CH:21][C:6]([O:7][C:8]2[C:9]([O:14][CH2:15][C:16]([O:18][CH2:19][CH3:20])=[O:17])=[N:10][CH:11]=[CH:12][CH:13]=2)=[C:5]([N+:36]([O-])=O)[CH:4]=1>C(O)(=O)C.[Fe]>[NH2:36][C:5]1[CH:4]=[C:3]([F:2])[C:22]([N:23]2[C:28](=[O:29])[CH:27]=[C:26]([C:30]([F:31])([F:33])[F:32])[N:25]([CH3:34])[C:24]2=[O:35])=[CH:21][C:6]=1[O:7][C:8]1[C:9]([O:14][CH2:15][C:16]([O:18][CH2:19][CH3:20])=[O:17])=[N:10][CH:11]=[CH:12][CH:13]=1

Participants

5

Reactant 2

HCID 962WaterHCID 186191833-{4-Fluoro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)-1,2,3,6-tetrahydropyrimidin-1-yl]-2-nitrophenoxy}-2-(ethoxycarbonyl)methoxypyridine2×

Product 1

HCID 186191543-{2-Amino-4-fluoro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)-1,2,3,6-tetrahydropyrimidin-1-yl]phenoxy}-2-(ethoxycarbonyl)methoxypyridineYield 94.8%

Reagents, catalysts & solvents 2

HCID 23925IronCatalystHCID 176Acetic AcidSolvent2×

Conditions

Temperature
35 °C

Procedure

To a mixture of 17 g of an iron powder, 30 ml of acetic acid and 3 ml of water was added a solution of 17.28 g of 3-{4-fluoro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)-1,2,3,6-tetrahydropyrimidin-1-yl]-2-nitrophenoxy}-2-(ethoxycarbonyl)methoxypyridine [present compound 9-46] in 20 ml of acetic acid dropwise while maintaining the temperature of the reaction solution at 35° C. or lower. After completion of the addition, the mixture was stirred for 1 hour at room temperature, for 3 hours at 40° C., then, the reaction solution was filtrated through Celite, and diluted with ethyl acetate. The mixture was neutralized with saturated aqueous sodium bicarbonate solution, the organic layer was washed with saturated saline, dried over anhydrous magnesium sulfate, and concentrated. Then, the resulted residue was subjected to silica gel column chromatography to obtain 15.46 g of 3-{2-amino-4-fluoro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)-1,2,3,6-tetrahydropyrimidin-1-yl]phenoxy}-2-(ethoxycarbonyl)methoxypyridine.

Workup

  1. additionAfter completion of the addition
  2. filtrationthe reaction solution was filtrated through Celite
  3. additiondiluted with ethyl acetate
  4. washthe organic layer was washed with saturated saline
  5. dry with materialdried over anhydrous magnesium sulfate
  6. concentrationconcentrated

Sources & evidence

ORD record
ord-e4be2f1b21814edc8dad2985d93dc317
Source dataset
uspto-grants-2003_03
Patent number
US06537948B1

Reaction notes

Loading…