کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1326310 | 1499931 | 2012 | 5 صفحه PDF | دانلود رایگان |
Modification of a neutral bis(phosphinimine) pincer ligand, whereby alkyl groups were placed at the P and N positions of the phosphinimine moieties, has been performed. A cationic zinc-lactate complex of this ligand displays enhanced activity relative to the previous generation catalyst for the polymerization of rac-lactide.
A new bis(phosphinimine) pincer ligand with alkyl groups at the P and N sites, has been prepared. A cationic zinc-lactate complex of this ligand displays high activity for the polymerization of rac-lactide.Figure optionsDownload as PowerPoint slideHighlights
► An alkyl substituted dibenzofuran-based bis(phosphinimine) pincer ligand was prepared.
► Cationic methylzinc (1) and zinc-lactate (2) complexes were synthesized in high yield.
► Complex 2 was structurally characterized.
► Complex 2 is an extremely active lactide polymerization catalyst.
► Complex 2 polymerizes lactide via a coordination-insertion mechanism.
Journal: Journal of Organometallic Chemistry - Volume 704, 1 May 2012, Pages 65–69