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Well-Defined Calcium Initiators for Lactide Polymerization
Abstract
A series of monomeric amide or aryloxide complexes of the form LCaX, where L = CH[CMeNC(6)H(3)-2,6-](2), CH[CMeNC(6)H(4)-2-OMe](2), a bulky tris-pyrazolyl borate, Tp(iPr) or Tp(tBu) or 9-BBN-pz(2) and X = N(SiMe(3))(2) or OC(6)H(3)-2,6-, has been prepared and characterized and investigated in the ring-opening polymerizations of lactide. The compounds (Tp(tBu))CaX in THF are shown to be highly active and stereoselective. The propylene oxide complex (Tp(tBu))Ca(OC(6)H(3)-2,6-).(PO) has been isolated and structurally characterized (single-crystal X-ray) and shown to be inert to the polymerization of PO.
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Metadata
- Authors
- Chisholm, M. H., Gallucci, J. C., & Phomphrai, K.
- Venue
- Inorganic Chemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 2004-09-24
- Volume
- 43
- Issue
- 21
- Pages
- 6717-6725
- ISSN
- 0020-1669 (ISSN-L)
- 1520-510X
- OpenAlex
- W2021795513
- Cited by
- 397
- References
- 2
- FWCI
- 10.65
- Type
- journal article
- Language
- en
- Open access
- closed
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