Ring-opening polymerization of substituted -caprolactones with a chiral (salen) AlOiPr complex


Breteler, Mark R. ten and Zhong, Zhiyuan and Dijkstra, Pieter J. and Palmans, Anja R.A. and Peeters, Joris and Feijen, Jan (2007) Ring-opening polymerization of substituted -caprolactones with a chiral (salen) AlOiPr complex. Journal of Polymer Science, Part A: Polymer chemistry, 45 (3). pp. 429-436. ISSN 0887-624X

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Abstract:The ring-opening polymerization (ROP) of -caprolactone (-CL), 4-methyl--caprolactone (4-MeCL), and 6-methyl--caprolactone (6-MeCL) with a single-site chiral initiator, R,R-(salen) aluminum isopropoxide (R,R-[1]), was investigated. The kinetic data for the ROP of the three monomers at 90° in toluene corresponded to first-order reactions in the monomer and propagation rate constants of k-CL > k4-MeCL k6-MeCL. A notable stereoselectivity with a preference for the R-enantiomer was observed in the ROP of 6-MeCL with R,R-[1], whereas for 4-MeCL, no stereoselectivity was found
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Copyright:© 2007 Wiley
Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/69712
Official URL:https://doi.org/10.1002/pola.21841
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Metis ID: 236912