Alumina-Promoted Copper-Catalyzed Hydroboration of Alkynes
作者:Gennadij V. Latyshev、Xenia A. Barashkova、Mikhail J. Parulava、Yury N. Kotovshchikov、Nikolay V. Lukashev、Irina P. Beletskaya
DOI:10.1055/a-2236-8874
日期:2024.5
Alumina was found to activate Cu(I) catalysts in hydroboration of alkynes. This allowed to develop a simple and efficient protocol for hydroboration of alkynes with B2Pin2 using inexpensive CuCl/PPh3 catalytic system. The approach does not require moisture-sensitive activators and stepwise preparation of ‘activated’ Cu complex. The developed conditions were applied to the preparation of β-styrylboronates
Visible-light-induced synthesis of a variety of trifluoromethylated alkenes from potassium vinyltrifluoroborates by photoredox catalysis
作者:Yusuke Yasu、Takashi Koike、Munetaka Akita
DOI:10.1039/c3cc39235j
日期:——
of trifluoromethylated alkenes by the radical-mediated trifluoromethylation of vinyltrifluoroborates has been developed. Togni's reagent serves as a CF(3) radical precursor in the presence of the photoredox catalyst [Ru(bpy)(3)](PF(6))(2) under visible light irradiation. This new photocatalytic protocol can be applicable to a wide variety of vinylborates containing electronically diverse substituents