Abstract
We have been studying the helix-sense-selective polymerization of bulky methacrylates such as triphenylmethyl methacrylate (TrMA),1 diphenyl-2-pyridylmethyl methacrylate (D2PyMA),2 phenyl-2-pyridyl-o- and m-tolyImethyl methacrylates (PPyoTMA and PPymTMA),3,4 and (S)-(-)-diphenyl(1-methylpyrrolidin-2-yl)methyl methacrylate (DMPMA)5 with chiral anionic initiators. In these polymerizations, optically active polymers with one-handed helical structure have been obtained and some of the polymers exhibited characteristic conformational transition in solution.6 In the present paper, we describe helix-sense-selective polymerization of 1-phenyldibenzosuberyl methacrylate (PDBSMA), diphenyl-3-pyridylmethyl methacrylate (D3PyMA) and phenyl[bis(2-pyridyl)]methyl methacrylate (PB2PyMA) by means of chiral anionic initiators and conformational transition of the obtained polymers. Asymmetric radical polymerization of PDBSMA is also reported because this monomer can also afford a helical, highly isotactic polymer by radical mechanism.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
