AbstractTrifluoromethylation‐based difunctionalization of alkenes provides a step‐economical route to CF3‐containing polyfunctionalized organics. New and scalable processes are highly desired in this field. Here, we report a simple and environmentally benign method for olefinic thiocyanotrifluoromethylation. Using PhICF3Cl as unique CF3 agent and NaSCN as the SCN source, the difunctionalization of alkenes selectively occurs on water at ambient condition. Mechanism studies suggest a radical process in which SCN anion is proposed to act as not only reductive initiator but also S‐nucleophile. All tested reactions are compatible with mono‐, di‐, tri‐, and tetra‐substituted alkenes and with high functional group tolerance. This method is also suitable for the selenocyanotrifluoromethylation of alkenes. Therefore, a sustainable platform has been established to synthesize valuable β‐trifluoromethylated thio(seleno)cyanates in a green way.
摘要基于三氟甲基化反应的烯烃双官能化为获得含 CF3 的多官能化有机物提供了一条经济可行的途径。该领域非常需要新的可扩展工艺。在此,我们报告了一种简单且对环境无害的烯烃硫氰三氟甲基化方法。使用 PhICF3Cl 作为独特的 CF3 剂,NaSCN 作为 SCN 源,在环境条件下,烯烃的二官能化选择性地发生在水上。机理研究表明这是一个自由基过程,其中 SCN 阴离子不仅是还原引发剂,也是 S 核亲和剂。所有测试反应都与单取代、二取代、三取代和四取代烯烃兼容,并且对官能团具有很高的耐受性。这种方法也适用于烯的硒氰三氟甲基化反应。因此,我们建立了一个可持续的平台,以绿色方法合成有价值的 β-三氟甲基化硫(硒)氰酸酯。