Manganese(III)-mediated direct phosphonylation of arenes
作者:Wei Xu、Jian-Ping Zou、Wei Zhang
DOI:10.1016/j.tetlet.2010.03.029
日期:2010.5
Manganese (III)-promoted direct phosphonylation of mono- and disubstituted arenes with dialkylphosphite afforded regioselective dialkylphosphonates in good yields. The reactions can apply to arenesbearing electron-donating groups and electron-withdrawinggroups such as ester and nitrile.
Abstract Diethyl arylphosphonates are efficiently and rapidly prepared from arylhalides, by a palladium catalysis, performed in a Teflon autoclave undermicrowave radiation generated by a commercial microwave oven.
An Improved Procedure for the Synthesis of Aryl Phosphonates by Palladium-Catalysed Cross-Coupling of Aryl Halides and Diethyl Phosphite in Polyethylene Glycol
作者:Ping Wang、Jie Lu、Zhan-Hui Zhang
DOI:10.3184/174751913x13686082295417
日期:2013.6
A general and greener protocol for the synthesis of aryl phosphonates by the cross-coupling of aryl halides and diethyl phosphite using tetrakis(triphenylphosphine)palladiume/triethylamine/polyethyleneglycol 600 [Pd(PPh3)4/Et3N/PEG 600] as an efficient catalytic system has been developed. This procedure also avoids hazardous solvents and is therefore an eco-friendly alternative to the existing methods
Four new bidentate phosphine ligands have been synthesized, characterized and evaluated in Ni-catalyzed C-P coupling reaction. The readily available and inexpensive highly active sulfonate Ni(cod)(2)-L8catalyzes the reaction leading to the desired aryl phosphonates accumulated with moderate to excellent yields. This method is characterized by good functional groups tolerance, wide substrate scope, and easy scaling up.
Palladium-catalyzed substitutions of triflates derived from tyrosine-containing peptides and simpler hydroxyarenes forming 4-(diethoxyphosphinyl)phenylalanines and diethyl arylphosphonates
作者:Konstantinos S. Petrakis、Tattanahalli L. Nagabhushan