10487-10-2Relevant articles and documents
Aluminum, indium, and mixed yttrium-lithium complexes supported by a chiral binap-based fluorinated dialkoxide: Structural features and heteroselective ROP of lactide
Maudoux, Nicolas,Roisnel, Thierry,Carpentier, Jean-Francois,Sarazin, Yann
, p. 5740 - 5748 (2014)
The new chiral Binap-based fluorinated dialcohol proteo-ligand {ONNO}H2 has been prepared under its enantiomerically pure and racemic forms following reaction of (R)- or (rac)-1,1′-binaphthyl-2,2′-diamine with 5,5,5-trifluoro-4-hydroxy-4-(trifluoromethyl)pentan-2-one. The racemic proteo-ligand reacts with the trivalent metallic precursors AlEt2Cl and In(CH2SiMe3)3 to yield the complexes (rac)-{ONNO}AlCl (1) and (rac)-{ONNO}In(CH2SiMe3) (2), while the reaction of (R)-{ONNO}H2 with a 1:1 mixture of Y(N(SiMe3)2)3 and LiN(SiMe3)2 gives the enantiomerically pure heterobimetallic [((R)-{ONNO})2Y·Li] (3). Complex 3 acts as a single-component initiator for the near-perfect heteroselective ring-opening polymerization (ROP) of racemic lactide, yielding polymers with Pr up to 0.99 under mild conditions. It also produces syndiotactic-enriched polylactide (Pr = 0.80) by ROP of meso lactide.
Convenient synthesis of mono- and di-β-hydroxy-β-bis(trifluoromethyl)-(di)imines from β-hydroxy-β-bis(trifluoromethyl)-ketones and (di)amines
Marquet, Nicolas,Grunova, Ekaterina,Kirillov, Evgueni,Bouyahyi, Miloud,Thomas, Christophe M.,Carpentier, Jean-Fran?ois
, p. 75 - 83 (2008)
A series of novel β-hydroxy-β-bis(trifluoromethyl)-imines (2a-j) and di(β-hydroxy-β-bis(trifluoromethyl))-diimines (3a-f) were prepared in moderate to good yields via a simple two-step approach: first, β-hydroxy-β-bis(trifluoromethyl)-ketones (1a-c) were
Fluorinated alkoxy-imino catalyst components
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Page/Page column 4, (2008/06/13)
This invention relates to fluorinated alkoxy-imino metallic complexes and their use in catalyst systems for the polymerisation or oligomerisation of ethylene and alpha-olefins.