使用绿光照射的二茂钛作为光氧化还原催化剂

Zhang Zhenhua, Hilche Tobias, Slak Daniel, Rietdijk Niels R, Oloyede Ugochinyere N, Flowers Robert A, Gansäuer Andreas

Kekulé-Institut für Organische Chemie und Biochemie, Universität Bonn, Gerhard Domagk-Straße 1, 53121, Bonn, Germany.

Department of Chemistry, Lehigh University, Bethlehem, PA, 18015, USA.

Angew Chem Int Ed Engl. 2020 Jun 8;59(24):9355-9359. doi: 10.1002/anie.202001508. Epub 2020 Apr 17.

Irradiation of Cp TiCl with green light leads to electronically excited [Cp TiCl ]*. This complex constitutes an efficient photoredox catalyst for the reduction of epoxides and for 5-exo cyclizations of suitably unsaturated epoxides. To the best of our knowledge, our system is the first example of a molecular titanium photoredox catalyst.

用绿光照射二氯环戊二烯钛会产生电子激发态的[二氯环戊二烯钛]*。这种配合物是一种高效的光氧化还原催化剂，可用于环氧化物的还原以及合适的不饱和环氧化物的5-外向环化反应。据我们所知，我们的体系是分子钛光氧化还原催化剂的首个实例。