This work describes a straightforward access to a large variety of arylphosphonates by the simple combination of diaryliodonium salts with phosphites in the presence of a base and under visible-light illumination. The reaction proceeds smoothly, tolerates various functionalities, and was applied for the synthesis of pharmaceutically relevant compounds. Mechanistic investigations, including EPR, NMR
Access to 2-Arylindoles via Decarboxylative C−C Coupling in Aqueous Medium and to Heteroaryl Carboxylates under Base-Free Conditions using Diaryliodonium Salts
作者:Velladurai Arun、Meenakshi Pilania、Dalip Kumar
DOI:10.1002/asia.201601290
日期:2016.12.6
accessible heteroaromatic carboxylic acids and diaryliodonium salts were successfully employed to construct valuable 2‐arylindoles and heteroaryl carboxylates in a regioselective fashion. C2‐arylated indoles were produced using a Pd‐catalyzed decarboxylative strategy in water without any base, oxidant, or ligand. Heteroaryl carboxylates were prepared under metal and base‐free conditions. This protocol was
Halogen Exchange via a Halogenation of Diaryliodonium Salts with Cuprous Halide
作者:Jian Li、Li Liu、Dong Ding、Jiang-tao Sun
DOI:10.2174/15701786113109990011
日期:2013.8.1
An efficient halogenation reaction has been developed with diaryliodonium salts and cuprous halides. Various
diaryliodonium salts 1 could perform the reaction with readily available CuBr or CuCl in CH3CN at 80°C, assembling
bromoarenes or chloroarenes in up to 92% yields. This provides us a method for the transformation from iodoarenes to
other haloarenes.
Copper-catalyzed remote C–H arylation of polycyclic aromatic hydrocarbons (PAHs)
作者:Anping Luo、Min Zhang、Zhangyi Fu、Jingbo Lan、Di Wu、Jingsong You
DOI:10.3762/bjoc.16.49
日期:——
regioselective C–H arylation of substituted polycyclic aromatic hydrocarbons (PAHs) is a desired but challenging task. A copper-catalyzed C7–H arylation of 1-naphthamides has been developed by using aryliodonium salts as arylating reagents. This protocol does not need to use precious metal catalysts and tolerates wide variety of functional groups. Under standard conditions, the remote C–H arylation of other
Catalyst‐Free Visible Light Mediated Synthesis of Unsymmetrical Tertiary Arylphosphines
作者:Dmitry I. Bugaenko、Alexander V. Karchava
DOI:10.1002/adsc.202200309
日期:2022.7.5
Arylation of tertiary aryl and alkyl phosphines bearing 2-cyanoethyl group with aryl(mesityl)iodonium triflates under blue light irradiation followed by retro-Michael reaction of the in situ generated quaternaryphosphonium salts initiated by DBU represent a novel efficient and general method for the preparation of distinctly substituted tertiary arylphosphines. An operationally simple, one-pot protocol