Sequential and regioselective Friedel–Crafts reactions of gem-dihalogenocyclopropanecarbonyl chlorides with benzenes for the synthesis of 4-aryl-1-naphthol derivatives
A regioselectivesynthesis of multisubstituted furan derivatives has been developed via Cu(II)-catalyzed intermolecular annulation of aryl ketones with a wide range of aromatic olefins under ambient air in good yields. This protocol is applicable to both cyclic and acyclic aryl ketones.
In this article, a photoredox protocol for the synthesis of furans via oxidative coupling of olefin generated in situ from cyclopropylketones with ketonic oxygen atom is presented. Moreover, bromination of furans in the presence of overstoichiometric oxidant has been achieved with high regioselectivity.
Synthesis of Polysubstituted Furans via Copper-Mediated Annulation of Alkyl Ketones with α,β-Unsaturated Carboxylic Acids
作者:Yuzhu Yang、Jinzhong Yao、Yuhong Zhang
DOI:10.1021/ol400912v
日期:2013.7.5
A novel copper-mediated annulation of alkyl ketones with alpha,beta-unsaturated carboxylic acids has been accomplished. This reaction provides a facile and regio-defined method for the synthesis of 2,3,5-trisubstituted furans from simple chemical reagents.