Synthesis of gem-dihaloenynes and butatrienes from gem-dihalovinyl derivatives
摘要:
gem-Dihaloenynes were synthesized in high yields from 1,1,4,4-tetrahalo-1,3-butadienes through the Fritsch-Buttenberg-Wiechell (FBW) rearrangement mediated by an organolithium compound. Butatriene derivatives could be obtained efficiently via an organolithium-mediated reaction of o-halo-(2,2-dihalovinyl)benzenes. (C) 2012 Elsevier Ltd. All rights reserved.
Synthesis of gem-dihaloenynes and butatrienes from gem-dihalovinyl derivatives
作者:Tianhao Meng、Hui-Jun Zhang、Zhenfeng Xi
DOI:10.1016/j.tetlet.2012.06.060
日期:2012.8
gem-Dihaloenynes were synthesized in high yields from 1,1,4,4-tetrahalo-1,3-butadienes through the Fritsch-Buttenberg-Wiechell (FBW) rearrangement mediated by an organolithium compound. Butatriene derivatives could be obtained efficiently via an organolithium-mediated reaction of o-halo-(2,2-dihalovinyl)benzenes. (C) 2012 Elsevier Ltd. All rights reserved.
Palladium-Catalyzed Intermolecular Domino Reaction of gem-Dibromoenynes with Anilines; A One-Pot Synthesis of Quinolines and Quinolinones
Abstract An efficientdomino process involving palladium-catalyzed amination of an alkenyl bromide, 1,5-H transfer, annulation via 6-exo-dig electrophilic cyclization, and palladium-catalyzed etherification, is described. This reaction provides an efficient one-pot synthesis of multi-substituted quinolines and quinolinones from gem-dibromoenynes and anilines. An efficientdomino process involving palladium-catalyzed