Triethylamine → 2-Phenyl-5-trifluoromethyl-oxazole-4-carboxylic acid [6-(acetyl-methyl-amino)-pyridin-3-yl]-amide

HRID 2236222Notes

Reaction equation

HRID 2236222 reaction equation
[C:1]1([C:7]2[O:8][C:9]([C:15]([F:18])([F:17])[F:16])=[C:10]([C:12]([OH:14])=O)[N:11]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[NH2:19][C:20]1[CH:21]=[CH:22][C:23]([N:26]([CH3:30])[C:27](=[O:29])[CH3:28])=[N:24][CH:25]=1.F[P-](F)(F)(F)(F)F.Br[P+](N1CCCC1)(N1CCCC1)N1CCCC1.C(N(CC)CC)C>ClCCl>[C:27]([N:26]([CH3:30])[C:23]1[N:24]=[CH:25][C:20]([NH:19][C:12]([C:10]2[N:11]=[C:7]([C:1]3[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=3)[O:8][C:9]=2[C:15]([F:18])([F:17])[F:16])=[O:14])=[CH:21][CH:22]=1)(=[O:29])[CH3:28]

Participants

6

Reactant 4

HCID 8471TriethylamineHCID 2733179PyBroPHCID 27764382-Phenyl-5-(trifluoromethyl)-oxazole-4-carboxylic acidHCID 59301435N-(5-aminopyridin-2-yl)-N-methylacetamide

Product 1

HCID 593013352-Phenyl-5-trifluoromethyl-oxazole-4-carboxylic acid [6-(acetyl-methyl-amino)-pyridin-3-yl]-amide

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A mixture of 2-phenyl-5-trifluoromethyl-oxazole-4-carboxylic acid (260 mg, 1 mmol), N-(5-amino-pyridin-2-yl)-N-methyl-acetamide (165 mg, 1 mmol), bromo-tri-pyrrolidino-phosphonium hexafluorophosphate (470 mg, 1 mmol), and triethylamine (202 mg, 2 mmol) in anhydrous dichloromethane (5 mL) was stirred at room temperature overnight. After the reaction was complete, the solvent and excess triethylamine were removed by evaporation. Flash chromatography (Merck silica gel 60, 230-400 mesh, 0%-40% ethyl acetate in hexane for 20 min) gave 2-phenyl-5-trifluoromethyl-oxazole-4-carboxylic acid [6-(acetyl-methyl-amino)-pyridin-3-yl]-amide as a yellow solid. LCMS calcd for C19H15F3N4O3 (m/e) 404, obsd 405 (M+H).

Workup

  1. customthe solvent and excess triethylamine were removed by evaporation

Sources & evidence

ORD record
ord-2ebdb6c29b2b41a18ae028e4f8b32459
Source dataset
uspto-grants-2010_05
Patent number
US07714126B2

Reaction notes

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