描述了一种由相应的硒氰酸酯(RSeCN)和TMCSF 2 H / t -BuOK合成芳基或烷基二氟甲基硒化物(RSeCF 2 H)的有效且无过渡金属的方法。在THF中于0°C进行24小时或在室温下进行6小时的反应可提供一系列RSeCF 2H以高产到高产。例如,成功制备了二氟甲基硒化的磺基二甲恶英衍生物并按比例放大合成了1-苄基-5-((二氟甲基)硒基)二氢吲哚,表明该方法具有良好的实用性。该反应的优点包括温和的反应条件,良好的官能团耐受性,多种底物和高效率。该方案提供了许多新颖的二氟甲基硒醚,这些醚将加速此类化合物在生命科学领域的使用。
N-Selenocyanato-Dibenzenesulfonimide: A New Electrophilic Selenocyanation Reagent
作者:Zhi-Min Chen、Deng Zhu、Ai-Hui Ye
DOI:10.1055/a-1493-6885
日期:2021.10
A new electrophilic selenocyanation reagent N-selenocyanato-dibenzenesulfonimide was readily prepared in two steps from commercially available dibenzenesulfonimide for the first time. A variety of electrophilic selenocyanato reactions of nucleophiles have been achieved using it as selenocyanato source under mild and simple conditions. Numerous SeCN-containing compounds were obtained in moderate to
An electrochemical method for deborylative seleno/thiocyanation of arylboronic acids under catalyst- and oxidant-free conditions
作者:Dongdong He、Jiaojiao Yao、Boling Ma、Jinghao Wei、Guangguo Hao、Xun Tuo、Shengmei Guo、Zhengjiang Fu、Hu Cai
DOI:10.1039/c9gc03797g
日期:——
An electrochemicaldeborylative seleno/thiocyanation of arylboronicacids has been well established to synthesize the corresponding aryl seleno/thiocyanates with good functional group tolerance under ambient conditions. A gram-scale reaction has been performed to highlight the advantages of the protocol. Preliminary mechanistic studies indicate that the oxidation of the seleno/thiocyanate anion occurs
Various aromatic selenocyanates were successfully delivered in moderate to excellent yields (up to 99 % yield) via direct selenocyanation of arenes/heterocyclic arenes with electrophilic selenocyanating reagents using Mechanochemistry. This protocol exhibits the advantages of operationally simple, environmentally friendly and time-economy.