Polymers of macrocyclic metal chelators and methods for the preparation and use thereof
First Claim
1. A polymer comprising at least one macrocyclic metal chelator as a repeating monomeric unit, said macrocyclic metal chelator monomeric unit being derived from a monomer containing at least one leaving group substituent which is labile for aromatic nucleophilic substitution and at least one electronegative substituent.
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Abstract
Polymers and copolymers are derived from substituted macrocyclic metal chelators. These polymers may be cross-linked, and are typically insoluble in most solvents. The metal complexes of these polymers exhibit the useful catalytic activity of the monomers. The polymers are advantageously prepared by reacting a polybasic nucleophile with the substituted macrocyclic metal chelator. Copolymers of the macrocyclic metal chelators with other polyfunctional monomers are also formed by reaction with suitable polybasic nucleophiles. Suitable macrocyclic metal chelators for use as monomers in accordance with the present invention have at least one leaving group substituent which is labile for aromatic nucleophilic substitution and at least one electronegative (or electron-withdrawing) substituent.
33 Citations
16 Claims
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1. A polymer comprising at least one macrocyclic metal chelator as a repeating monomeric unit, said macrocyclic metal chelator monomeric unit being derived from a monomer containing at least one leaving group substituent which is labile for aromatic nucleophilic substitution and at least one electronegative substituent.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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11. A polymer according to claim 1, wherein the monomer is selected from the group consisting of crown ethers and derivatives of crown ethers in which at least one O is replaced by one of --S--, --NY10 and mixtures thereof, in which each Y10 is independently selected from the group consisting of non-interfering substituents.
- 12. A polymer comprising the reaction product of at least one polybasic nucleophile and at least one macrocyclic metal chelator monomer containing at least one leaving group substituent which is labile for aromatic nucleophilic substitution and at least one electronegative substituent.
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14. A method of preparing a polymer comprising at least one macrocyclic metal chelator as a repeating monomeric unit, said method comprising:
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reacting at least one polybasic nucleophile with at least one macrocyclic metal chelator monomer containing at least one leaving group substituent which is labile for aromatic nucleophilic substitution and at least one electronegative substituent; and recovering the resultant reaction product. - View Dependent Claims (15, 16)
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16. A method according to claim 14, wherein said polybasic nucleophile is selected from the group consisting of dianions, alkoxides, mercaptides, amines and amides.
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Specification