反应详情

A mixture of 365 mg of (racemic)-3-methoxypyrrolidine, 480 mg of N-methyl-N-propargyl acetamide, 180 mg of paraformaldehyde, 0.6 ml of acetic acid, 20 ml of dioxane and cuprous chloride catalyst was stirred at reflux under argon for 1 hour. The mixture was treated with 3 ml of 5N sodium hydroxide and 2 ml of water and extracted twice with dichloromethane. The extracts were combined, concentrated and purified by chromatography (alumina), giving 610 mg of the desired product.

1. temperatureat reflux under argon for 1 hour
2. extractionextracted twice with dichloromethane
3. concentrationconcentrated
4. custompurified by chromatography (alumina)