Eosin Y, a well-known economical alternative to metal catalysts in visible-light-driven single-electron transfer-based organic transformations, can behave as an effective direct hydrogen-atom transfer catalyst for C-H activation. Using the alkylation of C-H bonds with electron-deficient alkenes as a model study revealed an extremely broad substrate scope, enabling easy access to a variety of important synthons. This eosin Y-based photocatalytic hydrogen-atom transfer strategy is promising for diverse functionalization of a wide range of native C-H bonds in a green and sustainable manner.
Eosin Y, aw ell-known economical alternative to metal catalysts in visible-light-driven single-electron transferbased organic transformations,c an behave as an effective direct hydrogen-atom transfer catalyst for CÀHa ctivation. Using the alkylation of C À Hb onds with electron-deficient alkenes as amodel study revealed an extremely broad substrate scope,enabling easy access to avariety of important synthons. This eosin Y-based photocatalytic hydrogen-atom transfer strategy is promising for diverse functionalization of aw ide range of native CÀHbonds in agreen and sustainable manner.
Aqueous ammonia was applied as the ammonia source in the continuous amination of aromatic and heteroaromatic halides assisted by a Teflon AF-2400 tube-in-tube reactor to generate densely substituted aryl/heteroaryl amines in high yields.
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