反应详情

6-(2-Methoxyethoxy)-1H-indole (1.461 g, 88% purity, 6.72 mmol) and (E)-benzyl 2-methyl-3-(2-nitrovinyl)phenylcarbamate (1.75 g, 5.60 mmol) were dissolved in THF (50 mL). The solution was then concentrated under vacuum to dryness. The solid mixture was melted at 125° C. and heated at this temperature for 16 hr. The mixture was subjected to ISCO (220 g silica gel, solid loading, 25-65% ethyl acetate/hexane) to afford the desired product (1.75 g, 3.48 mmol, 62% yield) as a beige solid.

1. concentrationThe solution was then concentrated under vacuum to dryness
2. temperatureheated at this temperature for 16 hr