A <i>para</i>
-C-H Functionalization of Aniline Derivatives via In situ Generated Bulky Hypervalent Iodinium Reagents
作者:Chao Tian、Xu Yao、Weizhe Ji、Qian Wang、Guanghui An、Guangming Li
DOI:10.1002/ejoc.201801058
日期:2018.11.25
A general para‐selective C‐H functionalization was achieved via a stericcontrol strategy. Para‐iodo, bromo, chloro, nitro, and trifluormethyl aniline derivatives were prepared via in situ generated, bulky hypervalent iodinium reagents in as little as 10 min. Products can be purified without column chromatography or recrystallization, which significantly reduces the waste and simplifies the work‐up
3,4-Dihydro-3-oxoquinoxalines carrying a carboxylic acid or ester function in the 2 position, used as antiviral agents, particularly against influenza virus, both A and B strains.
Synthesis of Phthalonitriles
Using a Palladium Catalyst
作者:Michael Hanack、Zafar Iqbal、Alexey Lyubimtsev
DOI:10.1055/s-2008-1078269
日期:——
An easy synthetic method to obtain phthalonitriles from o-dibromobenzenes under mild conditions in high yields using Zn(CN)2 and a catalytic amount of tris(dibenzylideneacetone)dipalladium and 1,1′-bis(diphenylphosphino)ferrocene is described.
regioselective halogenation of anilides and quinolines with heterogeneous Cu‐MnO catalyst and under irradiation with a household 40 W incandescent lamp was developed. The catalyst is recyclable, acetonitrile as an industrially friendly solvent, and economic N‐halo succinimides as a halogenating source. The reaction is scalable and well tolerated with a broad range of functional groups.