Single-component catalyst/initiators for the organocatalytic ring-opening polymerization of lactide |
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| Authors: | Csihony Szilárd Culkin Darcy A Sentman Alan C Dove Andrew P Waymouth Robert M Hedrick James L |
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| Institution: | Center for Polymeric Interfaces and Macromolecular Assemblies, Department of Chemistry, Stanford University, Stanford, California 94305, USA. |
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| Abstract: | The synthesis and characterization of a series of primary and secondary alcohol adducts of 1,3-dimesitylimidazolin-2-ylidene is described. These adducts are stable as solids at room temperature, but readily release alcohol and the free carbene in solution. These alcohol adducts function as excellent single-component catalyst/initiators for the ring-opening polymerization of lactide under mild conditions, providing polymers with controlled molecular weights and narrow polydispersities. Multifunctional adducts were used to prepare poly(lactide)s of more complex architectures. |
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