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Bis(guanidinate) Alkoxide Complexes of Lanthanides: Synthesis, Structures and Use in Immortal and Stereoselective Ring-Opening Polymerization of Cyclic Esters

✍ Scribed by Noureddine Ajellal; Dmitrii M. Lyubov; Mikhail A. Sinenkov; Georgii K. Fukin; Anton V. Cherkasov; Christophe M. Thomas; Jean-François Carpentier; Alexander A. Trifonov

Publisher: John Wiley and Sons
Year: 2008
Tongue: English
Weight: 360 KB
Volume: 14
Category: Article
ISSN: 0947-6539
DOI: 10.1002/chem.200800288

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The reaction of one equivalent of dilithiated O(SiMe 2 -Ap-H) 2 Cl(THF) Bu 4 N (5), O(SiMe 2 -Ap) 2 Y(BH 4 ) 2 Na(THF) 2 (6) and O(SiMe 2 -Ap) 2 Y(CH(TMS) 2 ) 2 Li(THF) 3 ( ), respectively. The [Ap-H = -N(2-amino-4-methylpyridine)] (1), generated in situ, with LnCl 3 (Ln = Y, Sm) in THF affords O(Si