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Stereospecific polymerization of benzyl α-(alkoxymethyl) acrylates

✍ Scribed by Shigeki Habaue; Hiroshi Yamada; Takahiro Uno; Yoshio Okamoto

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
158 KB
Volume
35
Category
Article
ISSN
0887-624X

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✦ Synopsis

a-(Alkoxymethyl)acrylates, such as methyl a-(phenoxymethyl)acrylate, benzyl a-(methoxymethyl)acrylate (BMMA), benzyl a-(benzyloxymethyl)acrylate, and benzyl a-(tert-butoxymethyl)acrylate, were synthesized, and their polymerizability and the stereoregularity of the polymers obtained by radical and anionic methods were investigated. The radically obtained polymers were found to be atactic by 13 C-and 1 H-NMR analyses, but the polymers obtained with lithium reagents in toluene at 078ЊC were highly isotactic. Further, it is noteworthy that isotactic polymers were also produced with lithium reagents even in tetrahydrofuran. Effects of polymerization temperature and counter cation on stereoregularity were clearly observed in the polymerization of BMMA, and a potassium reagent afforded an almost atactic polymer. ᭧ 1997

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