Synthesis of 3‐Organoselenyl‐2
<i>H</i>
‐Coumarins from Propargylic Aryl Ethers via Oxidative Radical Cyclization
作者:Jun‐Dan Fang、Xiao‐Biao Yan、Li Zhou、Yu‐Zhao Wang、Xue‐Yuan Liu
DOI:10.1002/adsc.201801565
日期:2019.4.23
A metal‐free oxidative radical cyclization/selenylation of propargylic aryl ethers with diaryl diselenides was developed. This protocol provided an alternative method to synthesize 3‐organoselenyl‐2H‐coumarins via the formation of C−Se bond, C−C bond, and C=O bond in one step. Moreover, a broad range of functional groups (such as halogen, aldehyde, ketone, cyano, and nitro group) were tolerated.
炔丙基芳基醚与二芳基二硒化物的无金属氧化自由基环化/硒基化反应得到了发展。该协议提供了另一种方法,可通过一步形成C-Se键,CC键和C = O键来合成3-有机硒基-2 H-香豆素。而且,宽泛的官能团(例如卤素,醛,酮,氰基和硝基)是可以容忍的。