Chiral bisoxazoline catalysts
AssigneeAgency for Science, Technology and Research
InventorsJackie Y. Ying, Su Seong Lee, Sukandar Hadinoto
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Abstract
The present invention describes a heterogeneous chiral catalyst comprising a heterogeneous chiral catalyst precursor complexed with a metal species. The precursor comprises a chiral bisoxazoline group coupled to an inorganic substrate. The heterogeneous chiral catalyst may be capable of catalysing a chemical reaction, for example cyclopropanation, and the chemical reaction may be capable of generating a chiral product.
Claims45
A heterogenous chiral catalyst precursor comprising a chiral bisoxazoline group coupled to an inorganic substrate, said precursor being made by a process comprising coupling a chiral bisoxazoline to a hydrophobic inorganic substrate.
A heterogeneous chiral catalyst comprising a heterogeneous chiral catalyst precursor complexed with a metal species, said heterogeneous chiral catalyst precursor comprising a chiral bisoxazoline group coupled to an inorganic substrate, and said precursor being made by a process comprising coupling a chiral bisoxazoline to a hydrophobic inorganic substrate.
A process for making a heterogeneous chiral catalyst precursor comprising coupling a chiral bisoxazoline to a hydrophobic inorganic substrate.
A process for making a heterogeneous chiral catalyst comprising coupling a chiral bisoxazoline to a hydrophobic inorganic substrate to make a heterogeneous chiral catalyst precursor and treating the heterogeneous chiral catalyst precursor with a metal species.
A heterogeneous chiral catalyst when made by a process comprising coupling a chiral bisoxazoline to a hydrophobic inorganic substrate to make a heterogeneous chiral catalyst precursor and treating the heterogeneous chiral catalyst precursor with a metal species.
A method for catalysing reaction of a starting material to a product comprising exposing the starting material to a heterogeneous chiral catalyst comprising a heterogeneous chiral catalyst precursor complexed with a metal species, said heterogeneous chiral catalyst precursor comprising a chiral bisoxazoline group coupled to an inorganic substrate, said precursor being made by a process comprising coupling a chiral bisoxazoline to a hydrophobic inorganic substrate.
A chiral product when made by a reaction catalysed by a heterogeneous chiral catalyst comprising a heterogeneous chiral catalyst precursor complexed with a metal species, said heterogeneous chiral catalyst precursor comprising a chiral bisoxazoline group coupled to an inorganic substrate, and said precursor being made by a process comprising coupling a chiral bisoxazoline to a hydrophobic inorganic substrate.
A heterogenous chiral catalyst precursor comprising a chiral bisoxazoline group coupled to an inorganic substrate, whereby said precursor is capable of complexing with Cu(I) to form a heterogeneous chiral catalyst, said catalyst being capable of catalysing a cyclopropanation reaction of an olefin with an azo compound with greater than 50% yield.
A heterogenous chiral catalyst precursor comprising a chiral bisoxazoline group coupled to an inorganic substrate, whereby said precursor is capable of complexing with Cu(I) to form a heterogeneous chiral catalyst, said catalyst being capable of catalysing a cyclopropanation reaction of an olefin with an azo compound with greater than 60% enantioselectivity.
A heterogeneous chiral catalyst comprising a heterogeneous chiral catalyst precursor complexed with a metal species, said heterogeneous chiral catalyst precursor comprising a chiral bisoxazoline group coupled to an inorganic substrate and said catalyst being capable of catalysing a cyclopropanation reaction of an olefin with an azo compound with greater than 50% yield.
A heterogeneous chiral catalyst comprising a heterogeneous chiral catalyst precursor complexed with a metal species, said heterogeneous chiral catalyst precursor comprising a chiral bisoxazoline group coupled to an inorganic substrate and said catalyst being capable of catalysing a cyclopropanation reaction of an olefin with an azo compound with greater than 60% enantioselectivity.
Dependencies are inferred from the claim text.