Stereocontrolled polymerization of racemic lactide with chiral initiator: combining stereoelection and chiral ligand-exchange mechanism.

@article{Majerska2004StereocontrolledPO,
  title={Stereocontrolled polymerization of racemic lactide with chiral initiator: combining stereoelection and chiral ligand-exchange mechanism.},
  author={Katarzyna Majerska and Andrzej Duda},
  journal={Journal of the American Chemical Society},
  year={2004},
  volume={126 4},
  pages={1026-7}
}
New opportunities, provided by the 2,2'-[1,1'-binaphthyl-2,2'-diylbis(nitrylomethilidyne)]diphenol (SB(OH)2)/Al(OiPr)3/racemic lactide (rac-LA) polymerization system, employing a combination of stereoelection with (S) and (R) ligand-exchange mechanism at Al-alkoxide active centers were explored. The stereoelectivity was comparable to that determined for the process with an additional synthetic step of isolation and purification of the SBO2Al-OiPr alkoxide. The resultant poly(rac-LA) had a… CONTINUE READING

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