Thiol-Yne click chemistry of acetylene-enabled macrocyclization

Shiwei Lü, Zipeng Wang and Shifa Zhu ()
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Shiwei Lü: South China University of Technology
Zipeng Wang: South China University of Technology
Shifa Zhu: South China University of Technology

Nature Communications, 2022, vol. 13, issue 1, 1-11

Abstract: Abstract Macrocycles have fascinated scientists for over half a century due to their aesthetically appealing structures and broad utilities in chemical, material, and biological research. However, the efficient preparation of macrocycles remains an ongoing research challenge in organic synthesis because of the high entropic penalty involved in the ring-closing process. Herein we report a photocatalyzed thiol-yne click reaction to forge diverse sulfur-containing macrocycles (up to 35-membered ring) and linear C2-linked 1,2-(S-S/S-P/S-N) functionalized molecules, starting from the simplest alkyne, acetylene. Preliminary mechanistic experiments support a visible light-mediated radical-polar crossover dihydrothiolation process. This operationally straightforward reaction is also amenable to the synthesis of organometallic complexes, bis-sulfoxide ligand and a pleuromutilin antibiotic drug Tiamulin, which provides a practical route to synthesize highly valued compounds from the feedstock acetylene gas.

Date: 2022
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DOI: 10.1038/s41467-022-32723-0

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