Electrophilic Cyclization of Aryl Propargylic Alcohols: Synthesis of Dihalogenated 6,9-Dihydropyrido[1,2-<i>a</i>]indoles via a Cascade Iodocyclization
作者:Jia Wang、Hai-Tao Zhu、Si Chen、Yu Xia、Dong-Po Jin、Yi-Feng Qiu、Ying-Xiu Li、Yong-Min Liang
DOI:10.1021/acs.joc.6b02013
日期:2016.11.18
A strategy for the synthesis of 6,9-dihydropyrido[1,2-a]indoles through a cascade iodocyclization of 4-(3-methyl-1H-indol-1-yl)-1,1-diphenylbut-2-yn-1-ol derivatives is presented. This reaction was conducted under very mild conditions and in a short time. The reactions are metal-free, are environmentally friendly and give up to 94% yield. Moreover, the obtained halides allow functional group diversification
通过4-(3-甲基-1 H-吲哚-1-基)-1,1-二苯基丁-2-yn的级联碘化反应合成6,9-二氢吡啶并[1,2- a ]吲哚的策略给出了-1-醇衍生物。该反应在非常温和的条件下并且在短时间内进行。该反应不含金属,对环境无害,产率高达94%。而且,所获得的卤化物允许通过钯催化的偶联反应使官能团多样化,其可以用作合成有价值的化合物的潜在中间体。