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Synopsis of Chemical Syntheses

We now cite representative chemical syntheses of CPs to impart an idea of the very wide variety of synthetic methods used, nearly all being adaptations of methods widely used in synthetic organic and conventional polymer chemistry. [Pg.118]

The wide variety of coupling methods adapted from organic synthesis to condensation polymerization of just one CP can be appreciated from Fig. 5-12. for poly(pheny-lene). Typical condensations and eliminations adapted to syntheses of such CPs as poly(phenylene) and poly(phenylene vinylene) (P(PV)) are illustrated in Fig. 5-13. Fig. 5-14 shows the variety of precursor routes available to P(PV). More recently, the Yu group [86] has demonstrated application of Pd-catalyzed Stille and Heck reactions to the synthesis of poly(thiophene) (P(T)) derivatives (cf. Fig. 5-15. Besides the Grignard couplings such as shown in Eq. 1.6, Chapter 1, P(T) s can also be prepared via a variety of other procedures, such as Friedel-Crafts alkylation [87], and direct oxidation with FeClj as for P(Py) above. [Pg.119]

5-12 Representative application of common coupling reactions to poly(arylene) synthesis. After Reference [88], reproduced with permission. [Pg.119]


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