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Synthesis of new cores and their use in the preparation of polyester dendrimers
Authors:Jean-d&rsquo  Amour K. Twibanire,T. Bruce Grindley
Affiliation:a Department of Chemistry, Dalhousie University, Halifax, N.S., Canada B3H 4J3
b Applied Chemical Sciences, Jordan university of Science and Technology, PO Box 3030, Irbid 22110, Jordan
Abstract:Six dendrimer and dendron cores terminated by hydroxyl groups that are neither phenolic nor cleavable by hydrogenolysis have been prepared in a consistent one-pot manner from terminal allyl groups by reduction of the product of reductive ozonolysis. Some of the terminal allyl derivatives are new and others have been prepared by new methods. The well-known O-benzylidene derivative of 2,2′-bis(hydroxymethyl)propanoic acid was shown to be the cis-stereoisomer. A new AB3-type anhydride, tris(benzyloxymethyl)acetic anhydride has been prepared. It was demonstrated that these cores and dendrons could be assembled into first and second generation homo- and mixed polyester dendrimers.
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