Synthesis of Monofluoromethyl Selenoethers of Aryl and Alkyl from Organoselenocyanate via One‐Pot Reaction
作者:Yuan Cao、Lvqi Jiang、Wenbin Yi
DOI:10.1002/adsc.201900480
日期:2019.9.17
approach for the monofluoromethylselenolation of aryl and alkyl halides via one‐pot multistep synthesis using KSeCN and ICFH2 is described. Good yields and broad functional group compatibility were obtained. The successful preparation of monofluoromethylselenolated drug‐like compounds good practicability of this method. This protocol offered a number of new monofluoromethyl selenoethers, which would accelerate
Trifluoromethylselenolation of Aryldiazonium Salts: A Mild and Convenient Copper-Catalyzed Procedure for the Introduction of the SeCF<sub>3</sub>Group
作者:Pavlo Nikolaienko、Magnus Rueping
DOI:10.1002/chem.201504601
日期:2016.2.18
The straightforward introduction of the trifluoromethylseleno group into aromatic and heteroaromatic compounds is accomplished by the utilization of readily available aryldiazonium tetrafluoroborates, potassium selenocyanate, and Ruppert–Prakash reagent. The reaction tolerates a wide range of aromatic and heteroaromatic diazonium salts and is also amenable to the synthesis of pentafluoroethyl selenoethers
A convenient, transition metal-free synthesis of difluoromethyl selenoethers from organic selenocyanates and TMSCF2H
作者:Tao Dong、Jing Nie、Cheng-Pan Zhang
DOI:10.1016/j.tet.2018.08.001
日期:2018.9
for the synthesis of aryl or alkyl difluoromethyl selenides (RSeCF2H) from the corresponding selenocyanates (RSeCN) and TMSCF2H/t-BuOK is described. The reaction performed in THF at 0 °C for 24 h or at room temperature for 6 h supplied a series of RSeCF2H in good to high yields. The successful preparation of difluoromethylselenolated sulfadimethoxine derivative and the scaled-up synthesis of 1-ben
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。
Synthesis of Selenium Derivatives using Organic Selenocyanates as Masked Selenols: Chemical Reduction with Rongalite as a Simpler Tool to give Nucleophilic Selenides
作者:Willber D. Castro‐Godoy、Adrián A. Heredia、Lydia M. Bouchet、Juan E. Argüello
DOI:10.1002/cplu.202400183
日期:2024.8
The chemical reduction of alkyl, aryl, and benzyl selenocyanates, as masked selenols, using Rongalite is investigated. As a result, the corresponding diselenides were obtained selectively in very good to excellent yields. Additionally, a simple methodology is described using the in-situ generated benzyl selenolate anion to promote nucleophilic substitution, epoxide ring opening, and Michael addition