Journal
DALTON TRANSACTIONS
Volume 39, Issue 36, Pages 8363-8376Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c001226b
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Funding
- Total Petrochemicals Co.
- CNRS
- ANR
- Region Bretagne
- Institut Universitaire de France [20052010]
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This Perspective article summarizes efforts paid in our group to develop efficient metal-based catalysts for the immortal ring-opening polymerization (iROP) of cyclic esters in the presence of large amounts of alcohols (ROH) as chain transfer agents. The catalyst systems reviewed include discrete organometallic complexes based on rare earths, magnesium, calcium and more specifically zinc, as well as simple systems employing metal triflate salts, notably Al(OTf)(3), for the (stereo) controlled iROP of lactide (LA), beta-butyrolactone (BBL) and trimethylenecarbonate (TMC). Special emphasis is given to systems that allow the use of minute amounts of metal catalysts and large loadings of both monomer and alcohol for the rapid and productive formation of functional polyesters (H-Pol-OR) with controlled molecular features.
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