Treating tetraethylurea with phosphorus pentachloride followed by tertbutylamine gave 1,1,3,3tetraethyl2tertbutyl guanidine,which,as a strong organic base,catalyzed the reaction of terminal epoxides with pht...Treating tetraethylurea with phosphorus pentachloride followed by tertbutylamine gave 1,1,3,3tetraethyl2tertbutyl guanidine,which,as a strong organic base,catalyzed the reaction of terminal epoxides with phthalimide to give the corresponding regioselectively ringopening products,βphthalimido alcohols in good yields.展开更多
文摘Treating tetraethylurea with phosphorus pentachloride followed by tertbutylamine gave 1,1,3,3tetraethyl2tertbutyl guanidine,which,as a strong organic base,catalyzed the reaction of terminal epoxides with phthalimide to give the corresponding regioselectively ringopening products,βphthalimido alcohols in good yields.