Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5211589 | Reactive and Functional Polymers | 2007 | 9 Pages |
Abstract
A wholly aromatic polyketone containing 2,2â²-dimethoxy-1,1â²-binaphthylylene moiety was successfully synthesized via electrophilic aromatic aroylation polycondensation with the aid of trifluoromethanesulfonic acid (TfOH) or phosphorus(V) oxide-methanesulfonic acid mixture (P2O5-MsOH). The polycondensation reactions employing two sets of monomers of opposite combination that should afford the same structure of repeating unit showed distinct results. The polycondensation employing 2,2â²-dimethoxy-1,1â²-binaphthyl (4) as the acyl-acceptant monomer proceeded to give medium-molecular-weight polymer. The polymer synthesis via transformation of biaryl 4 into the corresponding acyl-donor monomer 12 followed by polycondensation with 2,2â²-dimethoxybiphenyl (1) predominated the procedure of direct usage of biaryl 4 as the acyl-acceptant monomer. Acyl-acceptant monomer has been demonstrated to play a more crucial role in determination of polymerizability than acyl-donor one.
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Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Akiko Okamoto, Ryosuke Mitsui, Katsuya Maeyama, Hiromu Saito, Hideaki Oike, Yoshihiko Murakami, Noriyuki Yonezawa,