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Updated: Aug 26, 2025
Synthesis of a Borylated Ibuprofen Derivative Through Suzuki Cross-Coupling and Alkene Boracarboxylation Reactions
Published on: November 30, 2022
Boroxine template for macrocyclization and postfunctionalization
Kosuke Ono1, Satoru Onodera2, Hidetoshi Kawai2
1School of Science, Tokyo Institute of Technology, O-okayama Meguro-ku, Tokyo 152-8551, Japan. k.ono@chem.titech.ac.jp.
Abstract:
A novel synthetic strategy for large macrocyclic molecules using boroxine formation was developed. For this, the threefold intramolecular olefin metathesis of 3,5-bis(alkenyloxy)phenylboroxines with various lengths of alkenyl chains, formed by the dehydration of the corresponding boronic acid substrates, together with treatment with pinacol, was used to produce 39-, 45-, and 51-membered macrocyclic compounds with three boronate units. The boroxine moiety functions as a covalent template but can also be used to postmodify the macrocycle. Boroxine-templated macrocyclization implemented in this way does not require the addition of template molecules and simplifies the synthetic procedure.
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