quinolines with aldehydes, induced by sustainable visiblelight under mild conditions, are described. Non-toxic and inexpensive LiBr is found to be the key for the success of the atom-economical Minisci method. Combined with a highly oxidative photocatalyst and visiblelight irradiation, the bromide additive mediates the H abstraction/acyl radical formation directly from aldehydes. The present mild
With embedding of hydrogen atom transfer (HAT) moieties into the skeleton, covalentorganicframeworks (COFs) are endowed with facile generation of alkyl radicals and improved light harvesting abilities. The developed COFs were examined as robust photocatalysts for C−H functionalization.
We proposed a Minisci-type strategy for the alkylation of heterocycles with a variety of boron species under low cost and easily scale-up conditions without the use of transition-metal or organo-catalysts. The extension of this strategy to other systems will provide green approaches for the post-modifications of drug molecules and complex natural products.