Radical Borylative Cyclization of 1,6-Dienes: Synthesis of Boron-Substituted Six-Membered Heterocycles and Carbocycles
作者:Jing Qi、Feng-Lian Zhang、Yun-Shuai Huang、Ai-Qing Xu、Shi-Chao Ren、Zhen-Yu Yi、Yi-Feng Wang
DOI:10.1021/acs.orglett.8b00694
日期:2018.4.20
A radical borylative cyclization reaction of 1,6-dienes was developed to assemble boron-handled six-membered heterocycles and carbocycles. This reaction was initiated by the chemo- and regio-controlled addition of an N-heterocyclic carbene–boryl radical to one of the alkene tethers, followed by an intramolecular 6-exo cyclization to afford a six-membered ring framework. The utility of this method was
发展了1,6-二烯的自由基硼化环化反应,以组装硼处理的六元杂环和碳环。通过化学和区域控制将N-杂环卡宾-硼基自由基加成至一个烯烃系链中,然后进行分子内6- exo环化以提供六元环骨架,从而引发该反应。通过硼基官能团的后期衍生化,在多种帕罗西汀类似物的合成中证明了该方法的实用性。