Triethylamine → 6-amino-N-(5-(3-fluoro-phenoxy)-thiophen-2-yl)-methylnicotinamide

Participants

Reaction Conditions

Reaction Steps

To a solution of 6-amino-nicotinic acid (270 mg, 2.0 mmol) and C-(5-(3-fluorophenoxy)thiophen-2-yl)methylamine (400 mg, 1.8 mmol) in N,N-dimethylformamide (10 mL) were added benzotriazole-1-yl-tris(dimethylamino)phosphonium hexafluorophosphate (870 mg, 2.0 mmol) and triethylamine (0.50 mL, 3.6 mmol), and the solution was stirred for 30 minutes at 60° C. Water and ethyl acetate were added to the reaction solution, which was then partitioned, and the organic layer was washed twice with water. Silica gel was added to the organic layer, the solvent was evaporated in vacuo for adsorption, purification was carried out with NH silica gel column chromatography (ethyl acetate, then ethyl acetate:methanol=10:1), and 6-amino-N-(5-(3-fluoro-phenoxy)-thiophen-2-yl)-methylnicotinamide (270 mg, 0.79 mmol, 43.9%) was obtained.

Provenance & Evidence