Polyamine macrocycles having organosilicon moieties were synthesized t
hrough new addition reaction of lithium alkylamide toward vinylsilane
derivatives. 6-Ethyl-3,3-dimethyl-3-sila-6,9-diazaundecane in the pres
ence of lithium alkylamide took place polyaddition reactions, consisti
ng of diamine and organosilicon units alternatively. By increasing pos
sibilities of intramolecular nucleophilic attack, the 9- and 18-member
ed polyamine macrocycles with organosilicon moieties were obtained in
good yield.