Herein,
a dual nickel/ruthenium strategy is developed for photoinduced
decarboxylative cross-coupling between α,β-unsaturated
carboxylic acids and cycloketone oxime esters. The reaction mechanism
is distinct from previous photoinduced decarboxylation of α,β-unsaturated
carboxylic acids. This reaction might proceed through a nickelacyclopropane
intermediate. The C(sp2)–C(sp3) bond
constructed by the aforementioned reaction provides an efficient approach
to obtaining various cyanoalkyl alkenes, which are synthetically valuable
organic skeletons in organic and medicinal chemistry, under mild reaction
conditions. The protocol tolerates many critical functional groups
and provides a route for the modification of complex organic molecules.
A method for Ni-catalyzed hydroalkylation of internal alkynes with cycloketone oxime esters was developed. The reaction has a broad substrate scope. This hydroalkylation shows excellent regio- and stereo-selectivity. This method...
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