Cationic and charge-neutral calcium tetrahydroborate complexes and their use in the controlled ring-opening polymerisation of rac-lactide |
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| Authors: | Cushion Michael G Mountford Philip |
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| Affiliation: | Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, UK. |
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| Abstract: | The first cationic main group tetrahydroborate complexes are reported. [Ca(BH(4))(THF)(5)][BPh(4)] and the charge neutral (Tp((t)Bu,Me))Ca(BH(4))(THF) are initiators for the living ring opening polymerization of rac-lactide, the latter producing PLA with high levels of heterotactic enrichment. These represent a new class of ROP initiators for main group metals. |
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