Water → 6-[3-(3-Fluoro-phenyl)-5-methyl-isoxazol-4-ylmethoxy]-N-(2,2,2-trifluoro-ethyl)-nicotinamide

HRID 332306Notes

Reaction equation

HRID 332306 reaction equation
C[Al](C)C.[F:5][C:6]([F:10])([F:9])[CH2:7][NH2:8].C[O:12][C:13](=O)[C:14]1[CH:19]=[CH:18][C:17]([O:20][CH2:21][C:22]2[C:23]([C:28]3[CH:33]=[CH:32][CH:31]=[C:30]([F:34])[CH:29]=3)=[N:24][O:25][C:26]=2[CH3:27])=[N:16][CH:15]=1.O>O1CCOCC1>[F:34][C:30]1[CH:29]=[C:28]([C:23]2[C:22]([CH2:21][O:20][C:17]3[CH:18]=[CH:19][C:14]([C:13]([NH:8][CH2:7][C:6]([F:10])([F:9])[F:5])=[O:12])=[CH:15][N:16]=3)=[C:26]([CH3:27])[O:25][N:24]=2)[CH:33]=[CH:32][CH:31]=1

Participants

6

Reactant 4

HCID 962WaterHCID 9773Ethanamine, 2,2,2-trifluoro-HCID 16682925TrimethylaluminumHCID 684418946-[3-(3-Fluoro-phenyl)-5-methyl-isoxazol-4-ylmethoxy]-nicotinic acid methyl ester

Product 1

HCID 426292046-[3-(3-Fluoro-phenyl)-5-methyl-isoxazol-4-ylmethoxy]-N-(2,2,2-trifluoro-ethyl)-nicotinamideYield 99.3%

Reagents, catalysts & solvents 1

HCID 312751,4-DioxaneSolvent2×

Procedure

A solution of trimethylaluminium (2 M in toluene, 600 μL, 1.2 mmol) was added dropwise (exothermic) to a solution of 2,2,2-trifluoroethylamine (119 mg, 94 μL, 1.2 mmol) in dioxane (7.5 mL) and the resulting mixture was stirred at room temperature for 1 h. Then a solution of 6-[3-(3-fluoro-phenyl)-5-methyl-isoxazol-4-ylmethoxy]-nicotinic acid methyl ester (103 mg, 0.3 mmol) in dioxane (4 mL) was added. The resulting mixture was then heated at 85-95° C. for 2 h and then cooled to room temperature and then poured into water and extracted with ethyl acetate which was then washed with brine, dried over sodium sulfate and evaporated. Purification by chromatography (SiO2, heptane:ethyl acetate=100:0 to 1:1) afforded the title compound (122 mg, 99%) which was obtained as a white solid. MS: m/e=410.1 [M+H]+.

Workup

  1. temperatureThe resulting mixture was then heated at 85-95° C. for 2 h
  2. temperaturecooled to room temperature
  3. extractionextracted with ethyl acetate which
  4. washwas then washed with brine
  5. dry with materialdried over sodium sulfate
  6. customevaporated
  7. customPurification by chromatography (SiO2, heptane:ethyl acetate=100:0 to 1:1)

Sources & evidence

ORD record
ord-b2b8899fbfd44d56a43b11086dddf901
Source dataset
uspto-grants-2014_11
Patent number
US08877783B2

Reaction notes

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