Synthesis of α-(Nitroaryl)benzylphosphonates via Oxidative Nucleophilic Substitution of Hydrogen in Nitroarenes
作者:Mieczysław Ma̧kosza、Daniel Sulikowski
DOI:10.1021/jo900204e
日期:2009.5.15
Carbanions of diethyl benzylphosphonate and diethyl 1-phenylethylphosphonate add to nitroarenes to form relatively long-lived σH adducts that can be oxidized to products of oxidativenucleophilicsubstitution of hydrogen. By variation of the conditions, o- and p-nitroarylated derivatives of the starting phosphonates can be synthesized regioselectively. It has been proven that addition of carbanions
Palladium-Catalyzed Hydroarylation of Diazocarboxylates and Diazophosphonates
作者:Sergey M. Golitsin、Irina P. Beletskaya、Igor D. Titanyuk
DOI:10.1055/s-0039-1690758
日期:2020.3
A simple synthetic procedure for the Pd-catalyzed hydroarylation of diazoaceticester has been previously developed in our laboratory. Now we have applied this methodology for hydroarylation of α-diazocarboxylates/α-diazophosphonates. Diazo compounds reacted with aryl iodides and formic acid to afford diarylated esters or phosphonates in yields up to 71%.