反应详情

温度

50 °C

6-Cyano-2-[1-(4-isopropoxy-3-methoxy-phenyl)-1-methyl-ethyl]-1H-indole-3-carboxylic acid ethyl ester (Compound L7, 1.25 g, 2.97 mmol) was dissolved in MeCN (18 mL), added with methanesulfonic acid (3.75 mL), and then stirred at 50° C. for 8 hr. Hexane was added to the reaction solution, and the precipitated solid was filtered to obtain the title compound (yellow solid, 185 mg, 19%).

1. filtrationthe precipitated solid was filtered