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。
A greener protocol for the synthesis of phosphorochalcogenoates: Antioxidant and free radical scavenging activities
作者:Daniela H. Mailahn、Lucas E.B. Iarocz、Patrick C. Nobre、Gelson Perin、Airton Sinott、Ana Paula Pesarico、Paloma T. Birmann、Lucielli Savegnago、Márcio S. Silva
DOI:10.1016/j.ejmech.2020.113052
日期:2021.3
which this stability study was also important to select some products for pharmacological screening. The phosphorochalcogenoates were screened in vitro and ex vivo tests for the antioxidant potential and free radical scavenging activity, as well as to investigation toxicity in mice through of the plasma levels of markers of renal and hepatic damage. The pharmacological screening of phosphorochalcogenoates
在这一贡献中,已开发出一种无金属和碱的方案,用于通过在50°C下使用DMSO作为溶剂来合成磷碳氢酸盐(Se和Te)。由二有机基二卤代膦酸酯和H-膦酸酯制备了多种磷代碳氢酸酯,导致了Chal-P(O)键的形成,反应速度快,收率好至极佳。通过1D和2D NMR,IR,CGMS和HRMS分析获得了产品的完整结构说明,并进行了磷藻酸酯的稳定性评估以有效地描述这种简单可行的方法。典型77硒 1个H}(δ硒= 866.0 ppm)设为125碲 1个H}(δTE = 422.0 PPM)和31 p 1个H}(δ P = -1.0,-13.0 -15.0和PPM)NMR化学位移均必须确认的副产物,其中该稳定性研究也很重要选择一些产品的药理学筛选。在体外和离体中筛选了磷酸胆碱酯进行抗氧化剂潜力和自由基清除活性测试,并通过血浆肾脏和肝损伤标志物的水平调查小鼠的毒性。药代磷酸酯的药理学筛选表明,该化合物
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.
Fast and transition metal-free general method for the preparation of chalcogenophosphates
作者:Junxing Wang、Xiaolong Wang、Hongjie Li、Jie Yan
DOI:10.1016/j.jorganchem.2018.01.057
日期:2018.3
completes in several minutes under mild conditions, affording the corresponding chalcogenophosphates in moderate to good yields. This fast and transition metal-free procedure provides a general method for the preparation of chalcogenophosphates.
在Cs 2 CO 3和I 2的存在下,亚磷酸二烷基酯与双杀烟碱(S,Se和Te)的偶联反应有效进行,并在温和的条件下在数分钟内完成,从而以中等至良好的收率提供了相应的硫代磷酸根。这种快速且无过渡金属的步骤提供了制备硫属磷酸盐的通用方法。