Syntheses of polymerizable carbodiimides bearing a terminal vinyl group.
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概要
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<I>N</I>-(<I>p</I>- or <I>m</I>-Vinylphenyl)-<I>N</I>′-isopropyl- and cyclohexylcarbodiimides (<B>3</B>) have been synthesized in reasonable yields by first synthesizing the substituted ureas by the reactions <I>p</I>- or <I>m</I>-vinylaniline with isopropyl or cyclohexyl isocyanate in THF and the subsequent dehydration with <I>p</I>-toluenesulfonyl chloride in pyridine. The monomers <B>3</B> were found to polymerize smoothly with AIBN to afford vinyl polymers bearing the corresponding carbodiimide units as pendants in more or less cross-linked forms. The cross-linked insoluble polymers thus obtained can act as a dehydrative coupling agent in reactions such as the formation of peptide linkages.
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- Syntheses of polymerizable carbodiimides bearing a terminal vinyl group.