1-Hydroxybenzotriazole hydrate → 2-(3,5-Difluoro-phenoxy)-N-[4-(1-hydroxy-1-methyl-ethyl)-benzyl]-nicotinamide

HRID 844065Notes

Reaction equation

HRID 844065 reaction equation
[F:1][C:2]1[CH:3]=[C:4]([CH:15]=[C:16]([F:18])[CH:17]=1)[O:5][C:6]1[N:14]=[CH:13][CH:12]=[CH:11][C:7]=1[C:8]([OH:10])=O.[NH2:19][CH2:20][C:21]1[CH:26]=[CH:25][C:24]([C:27]([OH:30])([CH3:29])[CH3:28])=[CH:23][CH:22]=1.O.ON1C2C=CC=CC=2N=N1.Cl.C(N=C=N)C>CN(C)C=O.O>[F:18][C:16]1[CH:15]=[C:4]([CH:3]=[C:2]([F:1])[CH:17]=1)[O:5][C:6]1[N:14]=[CH:13][CH:12]=[CH:11][C:7]=1[C:8]([NH:19][CH2:20][C:21]1[CH:26]=[CH:25][C:24]([C:27]([OH:30])([CH3:28])[CH3:29])=[CH:23][CH:22]=1)=[O:10]

Participants

7

Reactant 4

HCID 27960291-Hydroxybenzotriazole hydrateHCID 101542112-[4-(Aminomethyl)phenyl]propan-2-olHCID 21883477Ethylcarbodiimide hydrochlorideHCID 226121992-(3,5-Difluoro-phenoxy)-nicotinic acid

Product 1

HCID 226121702-(3,5-Difluoro-phenoxy)-N-[4-(1-hydroxy-1-methyl-ethyl)-benzyl]-nicotinamideYield 69.2%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

A solution of 2-(3,5-difluoro-phenoxy)-nicotinic acid (0.300 grams, 1.19 mmole), 2-(4-Aminomethyl-phenyl)-propan-2-ol (0.197 grams, 1.19 mmole) and 1-hydroxybenzotriazole hydrate (0.177 grams, 1.31 mmole) in dry dimethylformamide was added 1-(3-dimethylamino)-propyl)-3-ethylcarbodiimide hydrochloride (0.273 grams, 1.43 mmole) and stirred over night. The mixture was poured into 100 ml water and extracted with ethyl acetate. The combined extracts were washed with 1 N NaOH, water and brine, dried over MgSO4, filtered and concentrated to give an oil that was purified by chromatography on silica eluting with 40% ethyl acetate/hexane to give an oil. Recrystalization from ethyl acetate/hexane gave a white solid (0.328 g). M.P. 68-70° C.; Anal. calcd. for C22H20N2O3F2: C, 66.32; H, 5.06; N, 7,03; N, 703. Found: C, 67.30; H, 5.39; N, 6.56.

Workup

  1. extractionextracted with ethyl acetate
  2. washThe combined extracts were washed with 1 N NaOH, water and brine
  3. dry with materialdried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customto give an oil that
  7. customwas purified by chromatography on silica eluting with 40% ethyl acetate/hexane
  8. customto give an oil
  9. customRecrystalization from ethyl acetate/hexane

Sources & evidence

ORD record
ord-84f895d708bd48a883324e8285ba58f7
Source dataset
uspto-grants-2002_04
Patent number
US06380218B1

Reaction notes

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