Branched general synthetic strategy

This review covered recent developments in the synthesis of branched (star, comb, graft, and hyperbranched) polymers by cationic polymerization. It should be noted that although current examples in some areas may be limited, the general synthetic strategies presented could be extended to other monomers, initiating systems etc. Particularly promising areas to obtain materials formerly unavailable by conventional techniques are heteroarm star-block copolymers and hyperbranched polymers. Even without further examples the number and variety of well-defined branched polymers obtained by cationic polymerization should convince the reader that cationic polymerization has become one of the most important methods in branched polymer synthesis in terms of scope, versatility, and utility. 

The concepts surrounding the dendrimer synthesis have been lucidly presented [15, 22], The general synthetic strategy involves the repetitive alternation of a growth reaction and an activation reaction. Often these reactions have to be performed at many sites on the same molecule simultaneously. The growth reaction dictates the way by which the branching is introduced into a dendrimer. Many dendrimer syntheses rely upon traditional reactions, such as the Michael reaction or the Williamson ether synthesis while others involve the use of solid-phase synthesis or organotransition metal chemistry [1, 24]... 

A General Synthetic Strategy for the Synthesis of Branched CPIs... 

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