First-row transition metal hydrogenation and hydrosilylation catalysts
AssigneeArizona Board of Regents on behalf of Arizona State University
InventorsRyan J. Trovitch, Tufan K. Mukhopadhyay, Raja Pal, Hagit Ben-Daat Levin, Tyler M. Porter, Chandrani Ghosh
Life of this patent
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Abstract
Transition metal compounds, and specifically transition metal compounds having a tetradentate and/or pentadentate supporting ligand are described, together with methods for the preparation thereof and the use of such compounds as hydrogenation and/or hydrosilylation catalysts.
Claims20
A first row transition metal complex having a tetradentate or pentadentate supporting ligand, wherein the metal complex has a chemical structure selected from the group consisting of:
- wherein:
- M is Mn, Fe, Co, Ni, or a combination thereof;
- each X is a donor group independently selected from PR1n and NR1n, where n=2, 1, or 0, wherein each R1 is independently selected from an inert functional group, a substituted, unsubstituted, or cyclic C1-24 alkyl group optionally having one or more heteroatoms, and an aryl or substituted aryl group that optionally contains one or more heteroatoms;
- each R is independently selected from hydrogen, an inert functional group, a substituted, unsubstituted, or cyclic C1-24 alkyl group optionally having one or more heteroatoms, an aryl or substituted aryl group that optionally contains one or more heteroatoms, a moiety where two R groups taken together form a ring that is a substituted or unsubstituted, saturated or unsaturated cylic structure that optionally contains one or more heteroatoms, a halogen, an alkoxide, an amide, a silyl, a boryl, and combinations thereof;
- each Y is independently selected from a substituted or unsubstituted C2-3 alkylene linking group but not an aryl functionality directly attached to N;
- Z is absent, or is a hydride, an alkyl, an aryl, an alkoxide, an amide, a silyl, or a boryl;
- and
- wherein the metal complex is neutral.
A first row transition metal complex having a tetradentate or pentadentate supporting ligand, wherein the metal complex comprises a chemical structure selected from the group consisting of:
- wherein:
- M is Mn, Fe, Co, Ni, or a combination thereof;
- each X is a donor group independently selected from PR1n and NR1n, where n=2, 1, or 0, wherein each R1 is independently selected from an inert functional group, a substituted, unsubstituted, or cyclic C1-24 alkyl group optionally having one or more heteroatoms, and an aryl or substituted aryl group that optionally contains one or more heteroatoms;
- each R is independently selected from hydrogen, an inert functional group, a substituted, unsubstituted, or cyclic C1-24 alkyl group optionally having one or more heteroatoms, an aryl or substituted aryl group that optionally contains one or more heteroatoms, a moiety where two R groups taken together form a ring that is a substituted or unsubstituted, saturated or unsaturated cylic structure that optionally contains one or more heteroatoms, a halogen, an aikoxide, an amide, a silyl, a boryl, and combinations thereof;
- each Y is independently selected from a substituted or unsubstituted C3 alkylene linking group but not an aryl functionality directly attached to N;
- Z is absent, or is a hydride, an alkyl, an aryl, an alkoxide, an amide, a silyl, or a boryl;
- or a salt thereof, and
- wherein the metal complex is neutral or charged.
A first row transition metal complex having a tetradentate supporting ligand, wherein the metal complex comprises a chemical structure selected from the group consisting of:
- wherein:
- M is Ni;
- each X is PR1n, where n=2, 1, or 0, wherein each R1 is an aryl group;
- each R is a C1 alkyl group;
- and
- each Y is a C3 alkylene linking group.
Dependencies are inferred from the claim text.