Copper-mediated oxidative difluoromethylenation of aryl boronic acids with α-silyldifluoromethylphosphonates: a new method for aryldifluorophosphonates
作者:Xueliang Jiang、Lingling Chu、Feng-Ling Qing
DOI:10.1039/c3nj00044c
日期:——
An unprecedented copper-mediated oxidative difluoromethylenation of aryl boronic acids with α-silyldifluoromethylphosphonates has been developed, allowing rapid access to a wide range of aryldifluorophosphonates containing various functional groups. This method provides a complementary and alternative method to Cu-mediated cross-couplings of aryl iodides with metalated difluoromethylphosphonates.
Nickel and Copper Catalyzed
<i>ipso</i>
‐Phosphonodifluoromethylation of Arylboronic Acids with BrCF
<sub>2</sub>
P(O)(OEt)
<sub>2</sub>
for the Synthesis of Phosphonodifluoromethylarenes
作者:Alexander Knieb、Vinayak Krishnamurti、Xanath Ispizua‐Rodriguez、G. K. Surya Prakash
DOI:10.1002/chem.202200457
日期:2022.7.20
The presented method allows the preparation of ipso-phosphonodifluoromethylarenes utilizing a heterobimetallic catalytic system of nickel and copper. The protocol represents an advantage over traditional palladium catalysed Suzuki coupling due to the short reaction times and the use of earth-abundant metals.
The nickel-catalyzed cross-coupling of bromodifluoromethylphosphonates with arylboron reagents was developed with a 1,10-phenanthroline-type ligand. In this process, functionalized and heterocycle-containing boroxines were found to be suitable partners, and the catalytic modification of biologically active molecules, such as fenofibrate and indomethacin, was also successfully achieved. Furthermore
Copper Catalyzed Cross-Coupling of Iodobenzoates with Bromozinc-difluorophosphonate
作者:Zhang Feng、Fei Chen、Xingang Zhang
DOI:10.1021/ol3006425
日期:2012.4.6
A copper-catalyzed cross-coupling of iodobenzoates with bromozinc-difluorophosphonate, generated from diethyl bromodifluoromethylphosphonate and zinc in dioxane, is reported. The notable features of this reaction are its high reaction efficiency, excellent functional group compatibility, and operational simplicity. This protocol provides a useful and facile access to aryldifluorophosphonates of interest in life science.