Anionic meth acrylate derivatives

Similarly, atom transfer radical polymerization (ATRP) has been used by Matyjaszewski and others for the synthesis of polystyrene and polyacrylates witii controlled molecular weights. This process is bas on a Cu(I) assisted atom-transfer radical polymerization (ATRP) One of the end groups is de ed by the structure of the initiator, whereas the other one contains an alkyl halide, such as chloride or bromide that can be converted to other functional groups. Additionally, the radical intermediates of ATRP are tolerant to many function groups, which can not be used directly in anionic or cationic processes, such as hydroxyalkyl, epoxy, enabling the direct synthesis of well-defined glycidyl, hydroxyethyl(meth)acrylates and other functional monomers. Percec and Barboiu have prepared polystyrene derivatives with efficient control of chain-end chemistry by the use of functionalized arenesulfonyl chlorides. 

Reetz and co-workers " first used metal-free carbon, nitrogen, or sulfur nudeophiles as initiators for the controlled anionic polymerization of nBA. It was thought that repladng the metal counterion in the polymerization would reduce the problem assodated with aggregation and improve the control over the polymerization. Tetrabutylammonium salts of malo-nate derivatives provided poly(n-butyl acrylate) (PnBA) of rdativdy narrow MWD at room temperature (Scheme 14). Many metal-free initiators for the polymerization of alkyl (meth) acrylates using a variety of anions and cations have been reported (Scheme 15) 208,220-224... 

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