Study on the Polymerization Reaction of 4-Vinyl-3-phenylsydnone and Its Physical Properties(I) -Synthesis and the Polymeric Character of 4-Alkenvisydone-

4-Vinyl-3-phenylsydnon의 중합반응 및 그 중합체의 물성에 관한 연구(I) ―4-Alkenylsydnone의 합성 및 그의 중합성에 관하여―

After metalation of 3-phenylsydnone by using n-BuLi or n-BuMgBr, 4-(2-hydroxyisopropyl)-3-phenylsydnone and 4-(1-hydroxy-1-ethyl)-3-phenylsydnone are obtained by addition reaction of acetone and acetaldehyde, respectively. The subsequent dehydration of each cabinol using P2O5 produces the corresponding alkenylsydnones. Polymerization reaction is carried out using this 4-vinyl-3-phenylsydnone; the reaction does not occur in the presence of radical initiator, on the other hand, the dimer is formed under cationic initiator, BF3-etherate and its structure is proposed. But the oligomer is obtained under the anionic polymerization condition.