1299831-18-7Relevant articles and documents
Highly Active Multidentate Catalysts for Efficient Alkyne Metathesis
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, (2013/10/08)
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.
Introducing a podand motif to alkyne metathesis catalyst design: A highly active multidentate molybdenum(VI) catalyst that resists alkyne polymerization
Jyothish, Kuthanapillil,Zhang, Wei
, p. 3435 - 3438 (2011/05/04)
Podand prevents polymers: The molybdenum(VI) propylidyne catalyst 1 with a podand triphenolamine ligand shows high activity in the metathesis of a variety of alkyne substrates, including heterocycles that contain donor moieties. With one substrate-binding site blocked by the multidentate ligand, the undesired polymerization of small alkynes that occurs with non-podand-ligand complex 2 is completely inhibited. Copyright
