Generation of 3-(1H-pyrrol-3-yl)-1H-inden-1-ones via a tandem reaction of 1-(2-alkynylphenyl)-2-enone, 2-isocyanoacetate, and water
作者:Danqing Zheng、Shaoyu Li、Jie Wu
DOI:10.1039/c2cc34509a
日期:——
A silver triflate-catalyzed tandem reaction of 1-(2-alkynylphenyl)-2-enone, 2-isocyanoacetate, and water provides a novel and efficient route for the delivery of 3-(1H-pyrrol-3-yl)-1H-inden-1-ones. Four bonds are formed during the tandem process.
Cu(0)/Selectfluor System-Mediated Mild Synthesis of Fluorinated Fluorenones from Nonaromatic Precursors (1,6-Enynes) Involving C–C Single Bond Cleavage
作者:Jian Zhang、Heng Wang、Shaobo Ren、Wei Zhang、Yunkui Liu
DOI:10.1021/acs.orglett.5b01110
日期:2015.6.19
A novel and facile method for the mild construction of fluorinated fluorenones from nonaromatic precursors (1,6-enynes) mediated by a Cu(0)/Selectfluor system has been successfully achieved. Preliminary mechanistic investigations indicate that the reaction may proceed via an unprecedented annulation/C–C single bondcleavage/fluorination sequence.
Facile and Diverse Synthesis of Benzo[<i>b</i>]fluorenone Derivatives through a Copper/Selectfluor-Catalyzed Tandem Annulation of 1,6-Enynes
作者:Jian Zhang、Haifeng Zhang、Dongdong Shi、Hongwei Jin、Yunkui Liu
DOI:10.1002/ejoc.201600982
日期:2016.11
tert-butyl-substituted benzo[b]fluorenones were obtained as the minor products. For arylethynyl-substituted 1,6-enynes, the substrates underwent tandem annulations to give 5-aryl-substituted benzo[b]fluorenones in moderate to excellent yields. For (trimethylsilyl)ethynyl-substituted 1,6-enynes, the reaction involved a tandem annulation/C–Si-bond-cleavage process to deliver 11H-benzo[b]fluoren-11-ones in