4 years ago

Photocatalytic α-Acylation of Ethers

Photocatalytic α-Acylation of Ethers
Zhongdong Sun, Masakatsu Shibasaki, Naoya Kumagai
Direct coupling of ethers and acyl halides was promoted by a binary catalytic system comprising an Ir-based photocatalyst and a Ni complex under blue-light irradiation. Photocatalysts with high triplet energy directed the catalysis, and the reaction likely proceeded by triplet–triplet energy transfer from the excited photocatalysts. Chlorine radicals generated from an excited Ni complex bearing a Ni–Cl bond would be responsible for generating α-oxy radicals leading to the α-acylated ethers.

Publisher URL: http://dx.doi.org/10.1021/acs.orglett.7b01552

DOI: 10.1021/acs.orglett.7b01552

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