反应详情

To a solution of methyl 4-aminobenzoate (500 mg, 3.31 mmol) in anhydrous pyridine (10 mL) was added dropwise 4-heptylbenzoyl chloride (950 μL) at 0° C. After 5 min the temperature was allowed to warm up to rt. After 90 min aminomethyl resin (Polymers Laboratories PL-AMS, 1.93 mmol/g, 720 mg) was added and the resulting mixture was stirred overnight at rt. After filtration and rinsing the resin, water (125 mL) was added to the filtrate and a white solid precipated out. Filtration and washing with water gave a solid which was dried under vacuo at 60° C. overnight. The title compound (1051 mg) was obtained as a white solid (90%) in 96.9% purity by HPLC (MaxPlot detection between 230 and 400 nm).

1. additionAfter 90 min aminomethyl resin (Polymers Laboratories PL-AMS, 1.93 mmol/g, 720 mg) was added
2. filtrationAfter filtration
3. washrinsing the resin, water (125 mL)
4. additionwas added to the filtrate
5. filtrationFiltration
6. washwashing with water
7. customgave a solid which
8. customwas dried under vacuo at 60° C. overnight