Dendritic molecules and method of production
First Claim
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1. A process for producing a dendritic macromolecule having a polyfunctional central core connected to a periphery by a dendritic body which comprises building the macromolecule starting with the periphery, continuing through the dendritic body to form a dendritic wedge having a single reacting group at its focal point, and then attaching the wedge through the focal point group to the central core.
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Abstract
Dendritic macromolecules and a novel convergent process for producing the same are disclosed. The convergent process enables the accurate control and design of the surface functionality of the macromolecule.
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52 Claims
- 1. A process for producing a dendritic macromolecule having a polyfunctional central core connected to a periphery by a dendritic body which comprises building the macromolecule starting with the periphery, continuing through the dendritic body to form a dendritic wedge having a single reacting group at its focal point, and then attaching the wedge through the focal point group to the central core.
- 23. A process of forming a dendritic wedge having a single reacting group at its focal point which comprises (i) reacting a surface compound containing a surface group which is non-reacting with all compounds and reagents used and intermediates formed in the preparation of the wedge and a single reacting group which reacts with a monomer unit containing at least two groups which are reacting with the reactive group of the surface compound and one non-reacting group at its focal point, (ii) activating the non-reacting group, (iii) reacting the activated focal point group with an additional monomer unit containing a non-reacting group at its focal point, (iv) repeating steps (ii) and (iii) until a dendritic wedge of the desired size is formed.
- 30. A macromolecule comprising a core compound having at least two functional sites and at least one dendritic wedge having a single reacting functional group at its focal point through which it is attached to the core compound, said dendritic wedge having been preformed and then coupled to the core compound by reaction between one of the functional groups on the core compound and the functional group at the focal point of the dendritic wedge.
- 46. A dendrimer comprising a highly branched polymer chain which contains a single reacting group located at its focal point.
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