A Novel and General Method for the Formation of S-Aryl, Se-Aryl, and Te-Aryl Phosphorochalcogenoates
作者:Guo Tang、Yu-Fen Zhao、Yu-Xing Gao、Yu Cao
DOI:10.1055/s-0028-1088012
日期:2009.4
A new and general method for the synthesis of S-, Se-, and Te-aryl phosphorochalcogenoates (chalcogenophosphates) has been developed. S-P, Se-P, and Te-P bonds were formed by the coupling of readily available dialkyl phosphites with diaryl dichalcogenides at 30 ËC in dimethyl sulfoxide in the presence of catalytic amounts of copper iodide and diethylamine. The reaction proceeded smoothly without exclusion of moisture or air.
Free Radical Reaction of Dialkyl Phosphites and Organic Dichalcogenides: A New Facile and Convenient Preparation of Arylselenophosphates
作者:Qing Xu、Chun-Gen Liang、Xian Huang
DOI:10.1081/scc-120022165
日期:2003.1.8
Abstract Azobisisobutyronitrile-initiated freeradicalreaction of dialkylphosphites with diaryl diselenides afforded arylselenophosphates in high yields. Arylthiophosphates and aryltellurophosphates can also be synthesized by similar reaction of diaryl disulfides and diaryl ditellurides with dialkylphosphites.
A convenient and efficient method for the synthesis of O,O-dialkyl-Se-aryl phosphoroselenoates is described via a one pot reaction of diaryl diselenide and O,O-dialkylphosphonate catalyzed by KOH assisted by a co-catalyst of calix[4]arene 3. The calix[4]arene 3 can be recycled for five times with good yields of the desired products for the reaction. This protocol provide a simple and efficient method
Atom-economical selenation of electron-rich arenes and phosphonates with molecular oxygen at room temperature
作者:Samir Kumar Bhunia、Pritha Das、Ranjan Jana
DOI:10.1039/c8ob02792g
日期:——
An environmentally benign selenation of electron-rich arenes and phosphonates is developed adopting a novel recycle–reuse–reduce strategy for selenol by oxygen.