The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. 27532-96-3, Name is H-Gly-OtBu.HCl, SMILES is O=C(OC(C)(C)C)CN.[H]Cl, in an article , author is Hanft, Anna, once mentioned of 27532-96-3, COA of Formula: https://www.ambeed.com/products/27532-96-3.html.
Rare-Earth Amido and Borohydrido Complexes Supported by Tetradentate Amidinate Ligands: Synthesis, Structure, and Catalytic Activity in Polymerization of Cyclic Esters
Amido [(BuC)-C-t(NC6H4-2-OMe)(2)](2)LnN(SiMe3)(2) (Ln = Y (3), Nd (4)) and borohydrido complexes [(BuC)-C-t(NC6H4-2-OMe)(2)](2)LnBH(4) (Ln = Y (5), Nd (6)) coordinated by new amidinate ligand bearing two pendant anisolyl groups are synthesized. According to X-ray analysis in complexes 3 and 4 one amidinate ligand is coordinated to the Ln(3+) cation in a bidentate fashion (kappa(2)-NN), while the second one is tetradentate (kappa(4)-NNOO). At the same time in borohydrido neodymium complex 6 the amidinate ligands demonstrate kappa(4)-NNOO and kappa(3)-NNO coordination modes. Complexes 3-6 proved to be efficient initiators for ring-opening polymerization of rac-lactide and allow for achieving quantitative conversion of 500 equivalents of monomer into polymer in 0.3-4.5 h at 25 degrees C. The polymerization of epsilon-caprolactone initiated by 3-6 proceeds much faster under similar conditions.
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