We have developed a synthesis of 1,2-substituted adamantane carboxylic acids and further bridged cycloalkanes (cage compounds) by palladium acetate-catalyzed C-H bond oxidation. Acetoxylation of cycloalkane framework was performed using picolylamide as a directing group. Modification of the substrate, ligand design and variation of reaction conditions enabled us to study the mechanism of acetoxylation of aliphatic compounds. Post-functionalization reactions and cleavage of the directing group were developed. For the first time the synthesis and characterization of a β-C -tri-substituted adamantane derivatives was achieved.
A Wagner–Meerwein rearrangement of iminium triflate salts followed by a Friedel–Crafts reaction enables the synthesis of aza-heterocycles and amines with adamantane scaffold.
We describe a triflic acid promoted cascade reaction of adamantane derivatives consisting of a decarboxylation of N-methyl protected cyclic carbamates and subsequent intramolecular nucleophilic 1,2-alkyl shift to generate ring contracted...
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