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.
convenient and effective route for the synthesis of aryl(difluoromethyl)phosphonates has been developed based on cross-coupling reactions. Upon treatment with a stoichiometric amount (or a catalytic amount in some cases) of CuI and CsF, aryl iodides reacted smoothly with (silyldifluoromethyl)phosphonates to give the corresponding aryl(difluoromethyl)phosphonates in good yields.