Photoredox Catalysis Using Heterogenized Iridium Complexes*.

ABSTRACT: Heterogenized photoredox catalysts provide a path for sustainable chemical synthesis using highly tunable, reusable constructs. Here, heterogenized iridium complexes as photoredox catalysts were assembled via covalent attachment to metal oxide surfaces (ITO, ZrO₂ , Al₂ O₃ ) in thin film or nanopowder constructs. The goal was to understand which materials provided the most promising constructs for catalysis. To do this, reductive dehalogenation of bromoacetophenone to acetophenone was studied as a test reaction for system optimization. All catalyst constructs produced acetophenone with high conversions and yields with the fastest reactions complete in fifteen minutes using Al₂ O₃ supports. The nanopowder catalysts resulted in faster and

SUBMITTER: Materna KL 

PROVIDER: S-EPMC9292873 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature