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ABSTRACT:
SUBMITTER: Kirchner PH
PROVIDER: S-EPMC10910528 | biostudies-literature | 2024 Feb
REPOSITORIES: biostudies-literature
Kirchner Philipp H PH Schramm Louis L Ivanova Svetlana S Shoyama Kazutaka K Würthner Frank F Beuerle Florian F
Journal of the American Chemical Society 20240207 8
The reversible condensation of catechols and boronic acids to boronate esters is a paradigm reaction in dynamic covalent chemistry. However, facile backward hydrolysis is detrimental for stability and has so far prevented applications for boronate-based materials. Here, we introduce cubic boronate ester cages <b>6</b> derived from hexahydroxy tribenzotriquinacenes and phenylene diboronic acids with <i>ortho</i>-<i>t</i>-butyl substituents. Due to steric shielding, dynamic exchange at the Lewis a ...[more]