反应详情

Phenylamine (1.86 g, 20 mmol) and phenylpropiolic acid (3.22 g, 22 mmol) were dissolved in dichloromethane (50 ml) and 1,3-dicyclohexylcarbodiimide (4.8 g, 23.2 mmol) was added in one portion at 0° C. The mixture was stirred room temperature for 14 h. The mixture was poured into water and extracted with dichloromethane (3×15 ml). The organic layers were combined, dried over anhydrous sodium sulfate and concentrated in vacuo. Purification by flash column chromatography on silica gel, eluting with hexanes-EtOAc (6:1 and then 4:1) afforded 3-phenyl-propynoic acid phenylamide 2.7 g (62%).

1. extractionextracted with dichloromethane (3×15 ml)
2. dry with materialdried over anhydrous sodium sulfate
3. concentrationconcentrated in vacuo
4. customPurification by flash column chromatography on silica gel
5. washeluting with hexanes-EtOAc (6:1