Polymer Synthesis by Click Chemistry

The essence of click chemistry is the idea of facilitation or making synthesis easy by selecting a gronp of reactions that, when strategically chosen, can facilitate synthesis of a stunning diver- 

The Diels-Alder [4 + 2] reaction (Fig. 12.4c), which is a cycloaddition between a conjugated diene (a four r-electron system) and a dienophile (a two r-electron system), is a elick reaction that has attracted much attention in macromolecular chemistry, particularly in providing new materials (Jones et al., 1999 Imai et ah, 2000 Gheneim et al., 2002 Vargas et ah, 2002 Durmaz et al., 2006 and Gacal et ah, 2006). Thiol-ene reactions (Fig. 12.4d, e), which also fall within the realm of click chemistry, refer to hydrothiolation of virtually any alkene C=C bond oeeurring by either radical or nucleophilic mechanisms. These have proven to be practieally useful for polymer synthesis imder extremely mild conditions, often with no solvent and little or no by-produet formation. Some of these reactions will be discussed more elaborately in later sections. 

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Chapter on polymer synthesis by click chemistry, using a unique problem-solving approach... 

For writing Chapters 11 and 12 on the two recent topics, living/controlled radical polymerization and polymer synthesis by click chemistry, which have not yet made a signi cant appearance in polymer chemistry textbooks, I have depended exclusively on original articles that appeared, especially in the last ten years, in many reputed journals. Most of the articles have, however, appeared in journals published by the American Chemical Society and John Wiley Sons. I am gratefnl to them for granting permission to reprodnce some material in the book from these jonmals. 

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