Preparation of 3-Diazoindolin-2-imines via Cascade Reaction between Indoles and Sulfonylazides and Their Extensions to 2,3-Diaminoindoles and Imidazo[4,5-<i>b</i>]indoles
作者:Guorong Sheng、Kai Huang、Zhihao Chi、Hualong Ding、Yanpeng Xing、Ping Lu、Yanguang Wang
DOI:10.1021/ol502423k
日期:2014.10.3
3-Diazoindolin-2-imines were constructed from indoles and sulfonylazides via an electronically matched 1,3-dipolar cycloaddition and a subsequent dehydroaromatization/ring-opening cascade. The reactionbetween 3-substituted indoles and sulfonyl azides provided 2-aminoindoles, while 2-substituted indoles furnished 3-aminoindoles. Moreover, 2,3-diaminoindoles could be prepared from the resulting 3-d
通过电子匹配的1,3-偶极环加成反应和随后的脱氢芳构化/开环级联反应,由吲哚和磺酰叠氮化物构建3-重氮吲哚-2-亚胺。3-取代的吲哚与磺酰叠氮化物之间的反应提供了2-氨基吲哚,而2-取代的吲哚提供了3-氨基吲哚。此外,可以由所得的3-重氮吲哚-2-亚胺和仲胺经铑催化的胺化反应制备2,3-二氨基吲哚。2,3-二氨基吲哚的进一步延伸导致咪唑并[4,5- b ]吲哚的形成。
Solid‐State Radical C−H Trifluoromethylation Reactions Using Ball Milling and Piezoelectric Materials
作者:Yadong Pang、Joo Won Lee、Koji Kubota、Hajime Ito
DOI:10.1002/anie.202009844
日期:2020.12.7
The application of piezoelectricity for the generation of trifluoromethyl (CF3) radicals is reported together with the development of a method for the mechanochemical C−H trifluoromethylation of aromatic compounds. As compared to conventional solution‐based approaches, this mechanoredox C−H trifluoromethylation enables cleaner and more sustainable access to a wide range of trifluoromethylated N‐heterocycles
Copper-Catalyzed Direct C–H Oxidative Trifluoromethylation of Heteroarenes
作者:Lingling Chu、Feng-Ling Qing
DOI:10.1021/ja209992w
日期:2012.1.18
This article describes the copper-catalyzed oxidative trifluoromethylation of heteroarenes and highly electron-deficient arenes with CF(3)SiMe(3) through directC-H activation. In the presence of catalyst Cu(OAc)(2), ligand 1,10-phenanthroline and cobases tert-BuONa/NaOAc, oxidative trifluoromethylation of 1,3,4-oxadiazoles with CF(3)SiMe(3) proceeded smoothly using either air or di-tert-butyl peroxide
Antifungal and/or antiparasitic pharmaceutical composition and novel indole derivatives as active principle of such a composition
申请人:——
公开号:US20040067998A1
公开(公告)日:2004-04-08
The present invention relates to novel indole derivatives, their method of preparation and their pharmacological activity as antimycotic and/or antiparasitic compounds.
ORGANOPHOSPHORUS COMPOUNDS BASED ON TETRAPHENOL (TP)-SUBSTITUTED STRUCTURES
申请人:Christiansen Andrea
公开号:US20120197025A1
公开(公告)日:2012-08-02
The invention relates to the synthesis of tetraphenol-substituted structures, in particular meta-substituted xylenes. Said tetraphenol-type structures are reacted to obtain organic phosphorus compounds, in particular organophosphites. The invention further relates to the production of catalytically active compositions which contain transition metals in addition to the aforementioned organic phosphorus compounds. According to another subject matter of the invention, said catalytically active compositions are used in chemical reactions with small molecules, e.g. HCN, CO, hydrogen, and amines.