Practical Protocol for the Palladium-Catalyzed Synthesis of Arylphosphonates from Bromoarenes and Diethyl Phosphite
作者:Lukas J. Gooßen、Mohammad K. Dezfuli
DOI:10.1055/s-2005-862372
日期:——
A greatly improved, reliable protocol for the palladium-catalyzed cross-coupling of dialkyl phosphites with aryl bromides has been developed. The use of an alcoholic solvent was the key to high yields in the synthesis of a broad variety of arylphosphonates, with Pd(OAc)2/PPh3 as the catalyst and a sterically demanding tertiary amine as the base.
Palladium-catalyzed phosphorylation of arylsulfonium salts with P(O)H compounds <i>via</i> C–S bond cleavage
作者:Huijin Liu、Kai Sun、Xiaolan Li、Jie Zhang、Wei Lu、Xuzhong Luo、Haiqing Luo
DOI:10.1039/d2ra04297e
日期:——
Herein we report a novel palladium-catalyzed phosphorylation of arylsulfonium salts with P(O)H compounds via C–S bondcleavage under mild conditions. The protocol provides a pragmatic strategy applicable to the synthesis of diverse arylphosphonates.
An easy synthesis of aryl phosphonates by oxidation from aryldichlorophosphines with iodine in good yields is described. Aryldichlorophosphines are obtained by reaction of phosphorous trichloride with some aromatics in presence of various Lewis acids. BiCl3 and Bi(OTf)3 are used for the first time and bismuth trichloride is, for the first time in the case of anisole or thioanisole phosphonylation,