Polyvinyl pyridine (PVP) is prepared by radical polymerization of 4-vinyl pyridine. PVP was used as a heterogeneous basic catalyst for the aza-Michael reaction of secondary amines and carbamates with α,β-unsaturated esters, cyanides and ketones to obtain the corresponding adducts in excellent yields (70-90%).
聚
乙烯吡啶(PVP)是通过自由基聚合4-
乙烯吡啶制备的。PVP被用作非均相碱性催化剂,用于催化二级胺和
氨基甲酸酯与α,β-不饱和酯、
氰化物和酮的aza-Michael反应,以优异的产率(70-90%)获得相应的加合物。