Generation of Alkyl Radical through Direct Excitation of Boracene-Based Alkylborate

The
generation of tertiary, secondary, and primary alkyl radicals
has been achieved by the direct visible-light excitation of a boracene-based
alkylborate. This system is based on the photophysical properties
of the organoboron molecule. The protocol is applicable to decyanoalkylation,
Giese addition, and nickel-catalyzed carbon–carbon bond formations
such as alkyl–aryl cross-coupling or vicinal alkylarylation
of alkenes, enabling the introduction of various C­(sp3)
fragments to organic molecules.