Photoredox-Catalyzed Acyl Lactonization of Alkenes with Aldehydes: Synthesis of Acyl Lactones
作者:Wei-Hao Rao、Qi Li、Li-Li Jiang、Ying-Ge Li、Pan Xu、Xue-Wan Deng、Ming Li、Guo-Dong Zou、Xinhua Cao
DOI:10.1021/acs.joc.2c01732
日期:2022.11.4
An acyl lactonization of alkenes with aldehydes under visible-light photoredox catalysis is described. With the protocol, a broad scope of alkenoic acids and aldehydes could be compatible and good functional group tolerance is obtained. A series of acyl lactones are obtained with isolated yields ranging from 50–95%. Mechanistic studies revealed that the transformation should proceed via a radical chain
Photocatalytic Redox-Neutral Alkoxyacylation of Alkenes
作者:Fu-Tong Cen、Yu Sun、Jian-Ping Qu、Yan-Biao Kang
DOI:10.1021/acs.orglett.3c03583
日期:2023.12.22
blocks in organic synthesis. By utilizing CBZ6, with an oxidative potential of −2.16 V (vs the saturated calomel electrode), as a redox-neutral photocatalyst, alkoxyacylation of olefins was accomplished under the irradiation of visible light via a cationic intermediate. It involves the addition of an acyl radical to olefin to form a radical intermediate and the following oxidation of the radical intermediate