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A new convenient access to N-carboxyanhydride (NCA) monomers has been achieved based on the utilization of bisarylcarbonates as a carbonyl source, which are activated by electron-withdrawing substituents on their aryl groups such as fluorine atom and nitro group. [Color figure can be viewed in the online issue, which is available at www.interscience.wiley.com.]
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Fujita et al. (2007) studied this question.
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