Visible-light-driven radical 1,3-addition of selenosulfonates to vinyldiazo compounds
作者:Weiyu Li、Lei Zhou
DOI:10.1039/d1gc02036f
日期:——
radical 1,3-selenosulfonylation of vinyldiazo compounds with selenosulfonates, providing various γ-seleno allylic sulfones in good yields. This photochemical reaction was carried out at room temperature in an open flask using ethyl acetate as the solvent without any photocatalysts or additives. The control experiments corroborated that the 1,3-addition proceeded via a radical-chain propagation process. The
Convenient Synthesis of Vinyldiazomethanes from α-Diazo-β-Keto Esters and Related Systems
作者:Huw M. L. Davies、Paul W. Hougland、William R. Cantrell
DOI:10.1080/00397919208019285
日期:1992.4
Abstract A series of vinydiazomethanes were readily prepared by sodiumborohydridereduction of a-diazo-p-ketoesters followed by phosphorusoxychloride induced dehydration of the resulting a-diazo-p-hydroxyesters.
Photocatalytic (3 + 3) Annnulation of Vinyldiazo Compounds and Aminocyclopropanes
作者:Sen Li、Lei Zhou
DOI:10.1021/acs.orglett.4c00963
日期:2024.4.19
allows the regioselective synthesis of cyclohexenes bearing adjacent amino and carbonyl groups with broad functional group tolerance. In a departure from previous reports, our work demonstrated that a distonic radical cation can be preferentially intercepted by weakly nucleophilic vinyldiazo compounds, followed by an exclusive 6-endo radicalcyclization for ring closure. Based on the interaction between