Cinnamoyl groups, pendant

Fig. 24. Photodimerization of cinnamoyl group bearing polymer pendant crown-ethers...

The preparations and properties of many polymers containing pendant aryl azide groups were described by Delzenne and London. There were attempts made to combine azide groups with cinnamoyl groups in one pendant substituent on polymers" ... 

Park et al, reported the synthesis and application of terpolymer bearing cyclic carbonate and cinnamoyl groups. The syntheses of photopolymer with pendant cinnamic ester and cyclic carbonate groups was achieved by the addition reaction of poly(glycidyl methacrylate-co-styrene) with CO2 and then with cinnamoyl chloride. Quaternary ammonium salts showed good catalytic activity for this synthesis. Photochemical reaction experiments revealed that terpolymer with cinnamate and cyclic carbonate groups has good photosensitivity, even in the absence of sensitizer. In order to expand the application of the obtained terpolymer, polymer blends with poly(methyl methacrylate) were also prepared. 

The reactive groups may be incorporated into polymer during the polymerization reaction for example, P-vinyloxethyl cinnamate undergoes cathionic polymerization through the vinyl ether (Equation 1.42) to yield a linear polymer containing pendant cinnamate ester. Alternatively, the group may be added to preformed polymer, as in the Schotten-Baumann reaction of poly(vinyl alcohol) with cinnamoyl chloride (Equation 1.43). 

Polymers with Pendant Cinnamoyl Functional Groups... 

---