Photo-Induced ortho-C–H Borylation of Arenes through In Situ Generation of Rhodium(II) Ate Complexes

Autor: Tanaka, Jin, Nagashima, Yuki, Araujo Dias, Antônio Junio, Tanaka, Ken
Zdroj: Journal of the American Chemical Society; August 2021, Vol. 143 Issue: 30 p11325-11331, 7p
Abstrakt: Photoinduced in situ“oxidation” of half-sandwich metal complexes to “high-valent” cationic metal complexes has been used to accelerate catalytic reactions. Here, we report the unprecedented photoinduced in situ“reduction” of half-sandwich metal [Rh(III)] complexes to “low-valent” anionic metal [Rh(II)] ate complexes, which facilitate ligand exchange with electron-deficient elements (diboron). This strategy was realized by using a functionalized cyclopentadienyl (CpA3) Rh(III) catalyst we developed, which enabled the basic group-directed room temperature ortho-C–H borylation of arenes.
Databáze: Supplemental Index