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Electron-withdrawing fluorous ligands

A series of pseudo-C or pseudo-C2 symmetric complexes 168-171 (Fig. 27) exhibited isotactic predominance P = 0.50-0.75) however, the isotacticity is compromised in solvent-free bulk polymerization at 130 °C [129]. Fluorous tertiary alcohol ligands with electron-withdrawing CF3 group are weakly basic and thus expected to reduce the possibility of catalyst deactivation by bridged species formation. Al complexes 172 and 173 offered highly isotactic-enriched stereoblock PLA (Pm = 0.87) from ROP of rac-lactide [168]. [Pg.268]

See other pages where Electron-withdrawing fluorous ligands is mentioned: [Pg.90]    [Pg.90]    [Pg.152]    [Pg.169]    [Pg.243]    [Pg.162]    [Pg.218]    [Pg.147]    [Pg.150]    [Pg.154]    [Pg.160]    [Pg.168]    [Pg.176]    [Pg.1380]    [Pg.1383]    [Pg.60]    [Pg.64]    [Pg.94]    [Pg.64]    [Pg.246]    [Pg.636]    [Pg.13]    [Pg.185]    [Pg.198]    [Pg.649]    [Pg.649]    [Pg.122]    [Pg.344]    [Pg.360]    [Pg.377]    [Pg.405]    [Pg.80]    [Pg.82]    [Pg.146]    [Pg.510]    [Pg.719]    [Pg.162]    [Pg.271]    [Pg.507]    [Pg.385]   
See also in sourсe #XX -- [ Pg.90 ]



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Electron withdrawal

Electron withdrawers

Electron withdrawing ligand

Fluorous

Fluorous ligands

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