Copper‐Mediated Formation of Aryl, Heteroaryl, Vinyl and Alkynyl Difluoromethylphosphonates: A General Approach to Fluorinated Phosphate Mimics
作者:Maria V. Ivanova、Alexandre Bayle、Tatiana Besset、Thomas Poisson、Xavier Pannecoucke
DOI:10.1002/anie.201507130
日期:2015.11.2
A general and efficient access to aryl, heteroaryl, vinyl and alkynyldifluoromethylphosphonates is described. The developed methodology using TMSCF2PO(OEt)2, iodonium salts and a copper salt provided a straightforward manifold to reach these highly relevant products. The reaction proved to be highly functional group tolerant and proceeded under mild conditions, giving the corresponding products in
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