A simple and practical protocol for the synthesis of 3-selanyl-benzo[b]furans mediated by the SelectFluor® reagent was developed. This novel methodology provided a greener alternative to generate 3-substituted-benzo[b]furans via a metal-free procedure under mild conditions. The intramolecular cyclization reaction was carried out employing an electrophilic selenium species generated in situ through
开发了一种简单实用的由 SelectFluor® 试剂介导的3-硒基-苯并[ b ]呋喃合成方案。这种新颖的方法提供了一种在温和条件下通过无金属程序生成 3-取代-苯并[ b ]呋喃的更环保的替代方案。分子内环化反应采用通过 SelectFluor® 和有机二硒化物之间的反应原位产生的亲电硒物质进行。通过异核核磁共振波谱证实了这种亲电硒物质(RSe-F)的形成,并探讨了其反应性。
A facile route to 5-methyl-5H-indeno[1,2-c]quinolones via palladium-catalyzed cyclization of 2-alkynylbromobenzenes with N,N-dimethyl-2-alkynylanilines
作者:Xiaolin Pan、Yong Luo、Yunyan Kuang、Guangming Li
DOI:10.1039/c4ob00706a
日期:——
A tandem reaction catalyzed by palladium is developed to provide a facile and simple route for the synthesis of 5-methyl-5H-indeno[1,2-c]quinolones.
由钯催化的串联反应被开发出来,为合成5-甲基-5H-吲哚[1,2-c]喹啉提供了一种简便的方法。
Synthesis of 3-((trifluoromethyl)thio)indoles via a reaction of 2-alkynylaniline with trifluoromethanesulfanylamide
作者:Jie Sheng、Shaoyu Li、Jie Wu
DOI:10.1039/c3cc45958f
日期:——
3-((Trifluoromethyl)thio)indoles can be synthesized by a palladium(II)-catalyzed reaction of 2-alkynylaniline with trifluoromethanesulfanylamide in the presence of bismuth(III) chloride. The presence of bismuth(III) chloride is crucial for the success of this transformation, which activates the trifluoromethanesulfanylamide during the reaction.
A palladium‐catalyzedreaction of 2‐alkynylaniline, isocyanides, and silver acetate is described, leading to 3‐amidylindoles in moderate to good yields. During the process, five new bonds are formed with high reaction efficiency in one‐pot procedure.