A metal-free direct α-selectivearylation of BODIPYs has been developed based on base-mediated C–Hfunctionalization with easily accessible diaryliodonium salts, which provides a straightforward facile access to a variety of α-arylBODIPY dyes. The α-regioselectivity was confirmed by X-ray analysis, and was studied by DFT calculation. The resultant dyes show strong absorption and emission over a broad
Copper-Catalyzed Regioselective Reaction of Internal Alkynes and Diaryliodonium Salts
作者:Ze-Feng Xu、Chen-Xin Cai、Jin-Tao Liu
DOI:10.1021/ol4003543
日期:2013.5.3
The copper-catalyzed highly regioselective reaction of internal alkynes with diaryliodonium salts was achieved for the first time. α-Arylketones were obtained in moderate to good yields from arylpropargylic alcohols or aryl alkyl alkynes under mild conditions. It was found that the two kinds of substrates underwent two different arylation–oxygenation pathways under different reaction conditions based
Pd-Catalyzed Regioselective Mono-Arylation: Quinazolinone as the Inherent Directing Group for C(sp<sup>2</sup>)–H Activation
作者:Dnyaneshwar N. Garad、Amol B. Viveki、Santosh B. Mhaske
DOI:10.1021/acs.joc.7b00948
日期:2017.6.16
The Pd-catalyzed quinazolinone-directed regioselective monoarylation of aromatic rings by C–H bond activation is developed. A broad substrate scope is demonstrated for both quinazolinone as well as diaryliodonium triflates. The use of a base was found to be crucial for this transformation, unlike for the known nitrogen-directed arylations. All of the novel quinazolinones of biological interest were
<i>N</i>
<sup>1</sup>
‐ and
<i>N</i>
<sup>3</sup>
‐Arylations of Hydantoins Employing Diaryliodonium Salts
<i>via</i>
Copper(I) Catalysis at Room Temperature
reported employing diaryliodonium triflates as aryl source using a copper(I) catalyst. The developed protocol is performable at room temperature and easily scalable. The robustness is confirmed with a wide range of substrate studies of both hydantoins and diaryliodonium salts. Sterically complicated ortho‐substituted diaryliodonium salts are also compatible with the reaction protocol.
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.