Lithium amide catalyzed anionic polyaddition of 1,4‐divinylbenzene with N,N′‐diethylethylenediamine

Lithium amide catalyzed anionic polyaddition of N,N′‐diethylethylenediamine (6) to 1,4‐divinylbenzene (9) was carried out to obtain a new type of polyamine possessing a polymerizable vinyl group at the chain end, a so‐called “macromer”. Analyses of the reaction and of the resulting polyamine by means of 13C NMR and GPC revealed that this polyaddition reaction is a typical equilibrium reaction which is not accompanied with any side reactions, except with a possible cyclization reaction. The equilibrium constants K and their temperature dependence were determined and compared with those of model reactions. The rate constants k1 of the first step reaction and k2 of the second step were also determined independently.