HIGHLY ACTIVE MULTIDENTATE CATALYSTS FOR EFFICIENT ALKYNE METATHESIS
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United States of America Patent
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Issued Date -
Oct 1, 2015
app pub date -
Mar 31, 2015
filing date -
Mar 9, 2012
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Abandoned
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Abstract
The invention relates to highly active and selective catalysts for alkyne metathesis. In one aspect, the invention includes a multidentate organic ligand wherein one substrate-binding site of the metal center is blocked. In another aspect, the invention includes N-quaternized or silane-based multidentate organic ligands, capable of binding to metals. In yet another aspect, the invention includes N-quaternized or silane-based multidentate catalysts. The catalysts of the invention show high robustness, strong resistance to small alkyne polymerization and significantly enhanced catalytic activity compared to their corresponding non-quaternized or non-silane-based multidentate catalyst analogues.
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