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
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.
一种采用新颖的循环-重复利用-减少策略,通过氧气对富电子芳烃和膦酸酯进行环保的硒化反应被开发出来。
Accelerating Electrochemical Synthesis through Automated Flow: Efficient Synthesis of Chalcogenophosphites
作者:Thomas Wirth、Nasser Amri
DOI:10.1055/s-0040-1707141
日期:2020.12
Integrated electrochemical reactors in automated flow systems have been utilised for chalcogenophosphite formations. Multiple electrochemical reactions can be performed using a programmed sequence in a fully autonomous way. Differently functionalised chalcogenophosphites have been efficiently synthesised in short reaction times.
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