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US 12,766,498 B2Granted
Platform for the recovery of transition metal catalysts
AssigneeTexas Tech University System
InventorsMichael Findlater, Guigen Li
Life of this patent
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Abstract
The present invention includes compositions and methods of using a molecule of Formula I: wherein R is selected from methyl, ethyl, propyl, isopropyl, butyl, phenyl, cyclohexyl, fluoro, chloro, methoxy, ethoxy, butoxy, phenoxy, aryl, alkene, alkyne, and heterocyclic. The molecule of Formula I is a ligand until a metal is added, at which time the molecule is a catalyst.
Claims22
A molecule of Formula I is a ligand (L):
- wherein R is selected from methyl, ethyl, propyl, isopropyl, butyl, cyclohexyl, fluoro, chloro, methoxy, ethoxy, butoxy, phenoxy, aryl, alkene, alkyne, and heterocyclic,
- wherein a catalyst is selected for an isomerization reaction catalyst, a hydrosilylation reaction catalyst, a Suzuki-Miyaura coupling catalyst, a Negishi coupling catalyst, a Sonogashira coupling catalyst or a Heck coupling catalyst;
- and
- wherein if the molecule is:
- then R is not isopropyl.
2 more elements
A method for recycling transition metal catalysis comprising:
- combining reactants in a solvent in the presence of a molecule having the formula I is a ligand (L):
- wherein R is selected from methyl, ethyl, propyl, isopropyl, butyl, cyclohexyl, fluoro, chloro, methoxy, ethoxy, butoxy, phenoxy, aryl, alkene, alkyne, and heterocyclic;
- wherein the catalyst is selected for an isomerization reaction catalyst, a hydrosilylation reaction catalyst, a Suzuki-Miyaura coupling catalyst, a Negishi coupling catalyst, a Sonogashira coupling catalyst or a Heck coupling catalyst;
- and
- wherein if the molecule is:
- then R is not isopropyl;
- under conditions that catalyze a reaction;
- and
- recycling the molecule of Formula I.
6 more elements
A tunable tridentate ligand for recyclable homogeneous transition metal catalyst comprising a molecule of Formula I is a ligand (L):
- wherein R is selected from methyl, ethyl, propyl, isopropyl, butyl, cyclohexyl, fluoro, chloro, methoxy, ethoxy, butoxy, phenoxy, aryl, alkene, alkyne, and heterocyclic;
- wherein the catalyst is selected for an isomerization reaction catalyst, a hydrosilylation reaction catalyst, a Suzuki-Miyaura coupling catalyst, a Negishi coupling catalyst, a Sonogashira coupling catalyst or a Heck coupling catalyst;
- and
- wherein if the molecule is:
- then R is not isopropyl.
2 more elements
Dependencies are inferred from the claim text.