反应详情

温度

130 °C

Variant a): 1.5 g of N,N-dimethylformamide-diethyl-acetal are added to 2.43 g of N-(2-chloropyrid-5-ylmethyl)-N-methyl-N'-nitroguanidine in 75 ml of dioxane. The mixture is heated at 130° C. for 45 minutes and is then freed of solvent using a rotary evaporator. The crude product is chromatographed over silica gel using first ethyl acetate and then ethyl acetate/ethanol (5:1). A viscous oil is formed which, after the addition of hexane, yields crystals of the desired product (m.p.: 85°-89° C.).

1. customa rotary evaporator
2. customThe crude product is chromatographed over silica gel using first ethyl acetate
3. customA viscous oil is formed which