Visible
<scp>Light‐Promoted</scp>
Sulfoxonium Ylides Synthesis from Aryl Diazoacetates and Sulfoxides
作者:Juan Lu、Lei Li、Xiang‐Kui He、Guo‐Yong Xu、Jun Xuan
DOI:10.1002/cjoc.202100064
日期:2021.6
A visible light-promoted reaction of donor/acceptor diazoalkanes with sulfoxides towards the synthesis of synthetically useful sulfoxonium ylides was reported. The reaction occurred under sole visible light irradiation without the need of any transition-metals or additives, affording the corresponding sulfoxonium ylides in moderate to good yields. The success of late-stage modification of natural isolates
Oxime Ether Synthesis through O–H Functionalization of Oximes with Diazo Esters under Blue LED Irradiation
作者:Qian Li、Bao-Gui Cai、Lei Li、Jun Xuan
DOI:10.1021/acs.orglett.1c02555
日期:2021.9.3
functionalization of oximes with diazo esters is described. The reaction occurs under very mild conditions (catalyst- and additive-free) with a high yield and a high functional group tolerance. When the reaction was performed with a cyclic ether as the solvent (e.g., THF, 1,4-dioxane, tetrahydropyran, ect.), an interesting photochemical three-component reactionproduct was obtained in good yields.
All‐Carbon Tetrasubstituted Olefins Synthesis from Diazo Compounds and Iodonium Ylides under Blue LED Irradiation
作者:Yan‐Rui Zhao、Lei Li、Guo‐Yong Xu、Jun Xuan
DOI:10.1002/adsc.202101144
日期:2022.2
tetra-substituted olefins through visible-light promoted coupling of diazo compounds with iodonium ylides was developed. A wide range of all-carbon tetra-substituted olefins was obtained in moderate to good yields. The synthetic values of the current method were further approved by the synthesis of natural isolates modified alkenes and the successful transformation of final olefins into important heterocycles
Visible light and base promoted O-H insertion/cyclization of para-quinone methides with aryl diazoacetates: An approach to 2,3-dihydrobenzofuran derivatives
作者:Shuangjing Zhou、Baogui Cai、Chuxia Hu、Xu Cheng、Lei Li、Jun Xuan