Multistep synthesis convergent steps

Dendrimers produced by divergent or convergent methods are nearly perfectly branched with great structural precision. However, the multistep synthesis of dendrimers can be expensive and time consuming. The treelike structure of dendrimers can be approached through a one-step synthetic methodology.31 The step-growth polymerization of ABx-type monomers, particularly AB2, results in a randomly branched macromolecule referred to as hyperbranch polymers. 

Another entirely different way to increase the overall efficiency of a multistep synthesis is based on a convergent synthetic strategy its essence illustrated in the model given in Scheme 3.31. It is easy to show that in this case the dependence of the overall yield of the final product upon the total number of steps is expressed by the equation Y = If we again assume Y = 80%, as the average yield... 

Are convergent syntheses. Convergent syntheses aim at improving the yield of multistep chemical reactions by reordering the reaction steps, which serves to increase the final yield of the desired product. Convergent synthesis can be highly effective when applied to the production of complex molecules such as proteins made up of 300 amino acids. ... 

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