Controllable chemoselectivity in the coupling of bromoalkynes with alcohols under visible-light irradiation without additives: synthesis of propargyl alcohols and α-ketoesters
作者:Ke Ni、Ling-Guo Meng、Hongjie Ruan、Lei Wang
DOI:10.1039/c9cc04090k
日期:——
The chemoselectivity of visible-light-induced coupling reactions of bromoalkynes with alcohols can be controlled by simple changes to the reaction atmosphere.
Divergent Mechanisms of the Banert Cascade with Propargyl Azides
作者:Juliana R. Alexander、Mary H. Packard、Alanna M. Hildebrandt、Amy A. Ott、Joseph J. Topczewski
DOI:10.1021/acs.joc.9b03061
日期:2020.3.6
heterocycles for a variety of applications. The synthesis of 1H-triazoles can be accomplished by the Banert cascade from propargylic azides. Depending on the substrate and conditions, the Banert cascade can proceed by either a sigmatropic or prototropic mechanism. This report describes the first detailed kinetic analysis of the Banert cascade proceeding by both pathways including substituent effects and KIE. The
Rh(III)-Catalyzed Coupling of Benzamides with Propargyl Alcohols via Hydroarylation–Lactonization
作者:Fen Wang、Zisong Qi、Jiaqiong Sun、Xuelin Zhang、Xingwei Li
DOI:10.1021/ol403166p
日期:2013.12.20
Rh(III)-catalyzed C-H activation and annulation of 1-benzoylpyrrolidine with propargyl alcohols has been achieved for an efficient synthesis of (4-benzylidene)isochroman-1-one. Highly enantioenriched products were obtained starting from optically pure propargyl alcohols.
Silver Mediated Banert Cascade with Carbon Nucleophiles
作者:Juliana R. Alexander、Paul V. Kevorkian、Joseph J. Topczewski