electrocatalysis strategy for the catalytic dehydrochlorination of DCE at the cathode simultaneously with anodic oxidative aromatic chlorination using the released HCl as the chloride source for the efficient synthesis of value‐added (hetero)arylchlorides. The mildness and practicality of the protocol was further demonstrated by the efficient late‐stage chlorination of bioactive molecules.
Chlorination Reaction of Aromatic Compounds and Unsaturated Carbon–Carbon Bonds with Chlorine on Demand
作者:Feng Liu、Na Wu、Xu Cheng
DOI:10.1021/acs.orglett.1c00704
日期:2021.4.16
electrochemical transformation and the high reactivity of chlorine. By utilizing Cl3CCN as the chloride source, donating up to all three chloride atom, the reaction could generate and consume the chlorine in situ on demand to achieve the chlorination of aromaticcompounds and electrodeficient alkenes.
Novel quaternary imidazolium salts substituted on one nitrogen of the imidazolium cation with a ##EQU1## group in which each A is an aryl radical and B is an aliphatic, aryl-substituted aliphatic or aromatic radical, said salts being useful as antimicrobial agents.
Regioselective nitration of anilines with Fe(NO<sub>3</sub>)<sub>3</sub>·9H<sub>2</sub>O as a promoter and a nitro source
作者:Yang Gao、Yuanyou Mao、Biwei Zhang、Yingying Zhan、Yanping Huo
DOI:10.1039/c8ob00841h
日期:——
An efficient Fe(NO3)3·9H2O promoted ortho-nitration reaction of aniline derivatives has been developed. This reaction may go through a nitrogen dioxide radical (NO2˙) intermediate, which is generated by the thermal decomposition of iron(III) nitrate. The practicality of the present method using nontoxic and inexpensive iron reagents has been shown by the broad substrate scope and applications.
Monoprotected <scp>l</scp>
-Amino Acid (<scp>l</scp>
-MPAA), Accelerated Bromination, Chlorination, and Iodination of C(sp<sup>2</sup>
)−H Bonds by Iridium(III) Catalysis
作者:Subban Kathiravan、Ian A. Nicholls
DOI:10.1002/chem.201700280
日期:2017.5.23
Halogenated arenes are important structural motifs commonly found in biologically active molecules and used for a variety of transformations in organic synthesis. Herein, we report the mono-protected L-amino acid (L-MPAA) accelerated iridium(III) catalyzed halogenation of (hetero)anilides at room temperature. This reaction constitutes the first example of an iridium(III)/L-MPAA catalyzed general halogenation