Abstract An efficient catalyst-free microwave (MW)-assisted method was elaborated for the batch and continuous flow synthesis of N-alkyl-isoindolinone phosphonates by the three-component reaction of 2-formylbenzoic acid, primary amines and various dialkyl phosphites. The reaction was also extended to various secondary phosphine oxides and primary amines, as well. In order to obtain more information
Acid/Phosphide-Induced Radical Route to Alkyl and Alkenyl Sulfides and Phosphonothioates from Sodium Arylsulfinates in Water
作者:Ya-mei Lin、Guo-ping Lu、Gui-xiang Wang、Wen-bin Yi
DOI:10.1021/acs.joc.6b02459
日期:2017.1.6
can in situ generate arylsulfenyl radicals. These radicals have high reactivity to react with alkynes, alkenes, and H-phosphine oxides for the synthesis of alkyl and alkenyl sulfides and phosphonothioates. The control experiments and quantum calculations are also performed to gain insights into the generation mechanism of arylsulfenyl radicals. Notably, the chemistry is free of thiol odors, organic solvents
Visible-Light-Promoted Transition-Metal-Free Phosphinylation of Heteroaryl Halides in the Presence of Potassium <i>tert</i>-Butoxide
作者:Jia Yuan、Wai-Pong To、Zi-Yang Zhang、Chang-Duo Yue、Sixuan Meng、Jian Chen、Yungen Liu、Guang-Ao Yu、Chi-Ming Che
DOI:10.1021/acs.orglett.8b03265
日期:2018.12.21
visible-light-promoted C–P bond formation reaction in the absence of both transition metal and photoredox catalysts is disclosed. By employing easily available and inexpensive heteroaryl chlorides/bromides as substrates, a variety of heteroaryl phosphine oxides were obtained in moderate to good yields. This strategy provides a simple and efficient route to heteroaryl phosphine oxides.
Palladium-Catalyzed Direct Decarbonylative Phosphorylation of Benzoic Acids with P(O)-H Compounds
作者:Ji-Shu Zhang、Tieqiao Chen、Li-Biao Han
DOI:10.1002/ejoc.201901865
日期:2020.3.8
A direct decarbonylative phosphorylation of benzoic acidscatalyzed by palladium was disclosed. Under the reaction conditions, a wide range of carboxylic acids coupled readily with all the three kinds of P(O)–H compounds, i.e. secondary phosphine oxides, H‐phosphinates and H‐phosphonates, producing the corresponding organophosphorus compounds in good to high yields. This reaction could be conducted
Electrochemical selenation of phosphonates and phosphine oxides
作者:Shengmei Guo、Sen Li、Zhebin Zhang、Wenjie Yan、Hu Cai
DOI:10.1016/j.tetlet.2019.151566
日期:2020.3
electrocatalytic strategy for the synthesis of organoselenophospho-rus between phosphonates /phosphine oxides and selenols/diselenides is reported. The reaction was performed with metal-, base- and oxidant-free at room temperature, and affords the selenophosphorus products in good to excellent yields. The good tolerance of substituents enables the reaction more attractive in the preparation of organoselenophosphorus