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Visible-Light-Induced C-O Bond Formation for the Construction of Five- and Six-Membered Cyclic Ethers and Lactones

Honggu Im, Dahye Kang, Soyeon Choi, Sanghoon Shin, Sungwoo Hong*

*Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon, 34141, Korea, Email:

H. Im, D. Kang, S. Choi, S. Shin, S. Hong, Org. Lett., 2018, 20, 7437-7441.

DOI: 10.1021/acs.orglett.8b03166

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The use of 2,4,6-triphenylpyrylium tetrafluoroborate (TPT) as catalyst allows a regiocontrolled construction of cyclic ethers and lactones via visible-light-induced intramolecular C-O bond formation. This approach provides valuable five- and six-membered cyclic ethers and lactones with a unified protocol.

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Key Words

lactones, oxygen, photochemistry

ID: J54-Y2018