反应详情

(E)-3-(3-Amino-4-methoxyphenyl)-2-(3,4,5-trimethoxyphenyl)-prop-2-enenitrile hydrochloride (998 mg, 2.65 mmols), 1,300 mg of a BOP reagent and 605 mg of Boc-L-Pro were dissolved in 50 ml of acetonitrile, and 0.8 ml of triethylamine were added thereto. The mixture was reacted at room temperature for 18 hours and at 50° C. for 20 hours. One-hundred milliliters of water and a small amount of sodium hydrogencarbonate were added thereto, and the resulting mixture was extracted with ethyl acetate. Subsequently, the extract was dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The product was purified using a silica-gel column (eluent, dichloromethane), and then concentrated to produce 1,310 mg (2.44 mmols) of the final product in a yield of 92%.

1. customThe mixture was reacted at room temperature for 18 hours and at 50° C. for 20 hours
2. extractionthe resulting mixture was extracted with ethyl acetate
3. dry with materialSubsequently, the extract was dried over anhydrous sodium sulfate
4. concentrationconcentrated under reduced pressure
5. customThe product was purified
6. concentrationconcentrated