syn-Selective alkylarylation of terminal alkynes via the combination of photoredox and nickel catalysis

Lei Guo, Fan Song, Shengqing Zhu, Huan Li and Lingling Chu ()
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Lei Guo: Donghua University
Fan Song: Donghua University
Shengqing Zhu: Donghua University
Huan Li: Donghua University
Lingling Chu: Donghua University

Nature Communications, 2018, vol. 9, issue 1, 1-8

Abstract: Abstract Substituted alkenes are pivotal structural motifs found in pharmaceuticals and agrochemicals. Although numerous methods have been developed to construct substituted alkenes, a generally efficient, mild, catalytic platform for the conversion of alkynes to this highly functionalized scaffold via successive C–C bond forming steps remains in high demand. Here we describe an intermolecular, regio- and syn-stereoselective alkylarylation of terminal alkynes with tertiary alkyl oxalates via photoredox-Ni dual catalysis. This catalytic protocol, synergistically combining Ir/Ni-catalyzed alkyne difunctionalization with photoinduced alkene isomerization, affords trisubstituted alkenes with excellent efficiency and syn-stereoselectivity. The mild conditions tolerate many functional groups, allowing for a broad scope with respect to terminal alkynes, aryl bromides, and alkyl oxalates.

Date: 2018
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DOI: 10.1038/s41467-018-06904-9

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