Polymerization via zwitterion 25. Alternating copolymerizations of cyclic acyl phosphorite and phosphite with vinyl monomers having an electron withdrawing group |
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Authors: | Takeo Saegusa Takatoshi Kobayashi Shiro Kobayashi |
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Affiliation: | (1) Department of Synthetic Chemistry, Faculty of Engineering, Kyoto University, 606 Kyoto, Japan |
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Abstract: | Summary Spontaneous copolymerizations of cyclic acyl phosphonite (SPO) and phosphite (SPI) with an electron-deficient vinyl monomer
such as methyl acrylate (MA), methyl vinyl ketone (MVK), and acrolein (AL), gave the corresponding alternating copolymers.
These copolymerizations took place without added initiator and proceeded through zwitterion intermediates. Copolymer structures
1a, 1b, 2 and 3 have been established, all of which were derived in a regiospecific manner of ambident anions. The scheme of the copolymerizations
is presented. |
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