Rhodium‐Catalyzed Atroposelective Construction of Indoles via C−H Bond Activation
作者:Lincong Sun、Haohua Chen、Bingxian Liu、Junbiao Chang、Lingheng Kong、Fen Wang、Yu Lan、Xingwei Li
DOI:10.1002/anie.202012932
日期:2021.4.6
rhodium(III)‐catalyzed C−H activation of anilines bearing an N‐isoquinolyl directing group for oxidative [3+2] annulation with four classes of internal alkynes, leading to atroposelective indolesynthesis via dynamic kinetic annulation with C‐N reductive elimination constituting the stereo‐determining step. This reaction proceeds under mild conditions with high regio‐ and enantioselectivity and functional
has recently achieved significant progress, the activity and selectivity of iron catalysts are generally inferior to those of noble-metal catalysts. The development of new iron-catalysed reactions, especially those in which iron catalysts exhibit superior activity or selectivity to other catalysts, is the key to promote iron catalysis. Herein, we report the first protocol for iron-catalysed hydroalumination
ICl-Mediated Functional Group Interconversion from Methyl Homopropargyl Ether to α-Iodo-γ-chloroketone
作者:Yu Chen、Samual Hee、Xiaochen Liu、Sajal Das、Dongsub Hong、Pak-Hing Leung、Yongxin Li、Jiaming Li、Jianbo Liu
DOI:10.1021/acs.joc.2c01638
日期:2022.11.18
An ICl-mediated highly chemo- and regioselective functionalgroup interconversion from methyl homopropargyl ether to α-iodo-γ-chloro-ketone is reported. Density functional theory (DFT)-calculated reaction coordinate and potential energy surface support the high chemo-selectivity observed for the formation of α-iodo-γ-chloroketone over furan. The five-membered oxonium ring formation–ring opening mechanism
The tandem intermolecular hydroalkoxylation/claisen rearrangement
作者:John M. Ketcham、Berenger Biannic、Aaron Aponick
DOI:10.1039/c2cc37166a
日期:——
The Au(I)-catalyzed intermolecular hydroalkoxylation of alkynes with allylic alcohols to provide allyl vinyl ethers that subsequently undergo Claisen rearrangement is reported. This new cascade reaction strategy facilitates the direct formation of gamma,delta-unsaturated ketones from simple starting materials in a single step.