Functional monomers and polymers. CXLII Inclusion polymerization of diene monomers in deoxycholic acid and apocholic acid canals by free radical initiators

Functional Monomers and Polymers CLVIII. Asymmetric Inclusion Polymerization of Cyclic Diene Monomers in a Deoxycholic Acid Canal

“…diene described in our previous paper. 6 These results indicate that the polymerization of these monomers in a DCA canal proceeds via a radical mechanism, and that monomer addition to the end of a polymer chain is regulated by host canals. The polymerization of cyclodienes occurred readily in the inclusion state via radical mechanism, but hardly in the absence of host molecules.…”

Functional Monomers and Polymers CLXVII. Asymmetric Inclusion Polymerization of 1-Alkyl-1,3-butadienes in Deoxycholic Acid and Apocholic Acid Canals by Long-Lived Propagating Radicals

“…Figure 1 shows the ESR spectra of the propagating radicals of 1-ethyl-BD (III) and 1-isopropyl-BD (IV) in DCA canals, as measured during the polymerization in the same way as described earlier. 11 The spectra consist of six or four lines with about 1.4 to 1.8 mT of hyperfine splitting constants, and are well assigned to allylic propagating radicals. 14 The spectrum of (III) (Figure l The apparent four line spectrum is considered due to the fact that hyperfine splittings with AH,, AHs, and AH• were smeared out because of the broad linewidth.…”

“…ESR measurements were carried out as described earlier. 11 Specific rotation was measured in chloroform with a JASCO DIP-181 digital polarimeter.…”