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Notable effect of imino substituent for the efficient ring-opening polymerization of ε-caprolactone initiated by Al complexes containing phenoxy-imine ligand of type, Me2Al(L) [L: O-2-tBu-6-(RNCH)C6H3; R: 2,6-iPr2C6H3, tBu, adamantyl, C6F5]

Paper ID Volume ID Publish Year Pages File Format Full-Text
52118 46865 2008 5 PDF Available
Title
Notable effect of imino substituent for the efficient ring-opening polymerization of ε-caprolactone initiated by Al complexes containing phenoxy-imine ligand of type, Me2Al(L) [L: O-2-tBu-6-(RNCH)C6H3; R: 2,6-iPr2C6H3, tBu, adamantyl, C6F5]
Abstract

Al complexes containing phenoxy-imine ligands of type, Me2Al[O-2-tBu-6-(RNCH)C6H3] [R = 2,6-iPr2C6H3 (1), tBu (2), adamantyl (3), C6F5 (4)] were prepared, identified, and their structures for 1–3 were determined by X-ray crystallography. The catalytic activity (turnover number, TON) in the ring-opening polymerization (ROP) of ε-caprolactone initiated by 1–4 upon the presence of nBuOH increased in the order: 4 ≫ 1 ≫ 2 > 3, suggesting that the imino substituent (R) plays an important role for the efficient ROP in a controlled manner; the highly efficient ROP has been achieved by the C6F5 analogue (4).

Keywords
Al complex; Ring-opening polymerization; Caprolactone; Ligand effect
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Notable effect of imino substituent for the efficient ring-opening polymerization of ε-caprolactone initiated by Al complexes containing phenoxy-imine ligand of type, Me2Al(L) [L: O-2-tBu-6-(RNCH)C6H3; R: 2,6-iPr2C6H3, tBu, adamantyl, C6F5]
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 9, Issue 6, 31 March 2008, Pages 1148–1152
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
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Any Questions? feel free to contact us