Lithium alkyl amide, polymerization initiator

Lithium Alkyl Amide as Initiator for Polymerizations of Isoprene and 1,4-Divinylbenzene... 

Alkah metal derivatives, including hydrides, alkyls and aryls, hydroxides, alkoxides, and amides, have been used as initiators for the anionic polymerization of epoxides. Sodium, potas-sirrm, and to a lesser extent cesium are the most often used alkali metals. Lithium derivatives are generally avoided since after the insertion of the first epoxide unit, they yield alkoxide species that are unable to properly propagate the polymerization, due to sUong association. Anionic polymerization of... 

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