Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 143, Issue 13, Pages 4896-4902Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.1c00618
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Funding
- National Natural Science Foundation of China [21772121, 21971163]
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Under mild reaction conditions, inexpensive cerium and nickel catalysts enable the use of easily accessible free alcohols as robust carbon pronucleophiles in selective C(sp(3))-C(sp(2)) cross-couplings. The identification of steric benzoate ligands for robust cerium complexes facilitates the synergy of cerium catalysis in emerging metallaphotoredox catalysis. Mechanistic investigations have led to the identification of a tribenzoate cerium(III) complex as a viable intermediate in the reaction.
Under mild reaction conditions with inexpensive cerium and nickel catalysts, easily accessible free alcohols can now be utilized as operationally simple and robust carbon pronucleophiles in selective C(sp(3))-C(sp(2)) cross-couplings. Facilitated by automated high-throughput experimentation, sterically encumbered benzoate ligands have been identified for robust cerium complexes, enabling the synergistic cooperation of cerium catalysis in the emerging metallaphotoredox catalysis. A broad range of free alcohols and aromatic halides can be facilely employed in this transformation, representing a new paradigm for the C(sp(3))-C(sp(2)) bond construction between free alcohols and aryl halides with the extrusion of formaldehyde. Moreover, mechanistic investigations have been conducted, leading to the identification of a tribenzoate cerium(III) complex as a viable intermediate.
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