A general and convenient copper-mediated trifluoromethylthiolation of primary and secondary alkyl halides was described. Variation of the solvent, additives and time allowed optimization of the reaction. A wide range of alkyl halides were explored to give a set of alkyl trifluoromethyl thioethers in moderate to excellent yields. A variety of functional groups, including ethers, thioether, esters, nitriles, amides, and ketal groups, were well tolerated in the electrophilic partner.
Stereospecific Dehydroxytrifluoromethylthiolation of Alcohols Promoted by a Combination of Hypervalent Trifluoromethylthio-iodine(III) Reagent and N-Heterocyclic Carbene
dehydroxytrifluoromethylthiolation of alcohols is an attractive strategy for accessing CF3S-containing compounds. Herein, we report a method for dehydroxytrifluoromethylthiolation of alcohols by using the combination of hypervalentiodine(III) reagent TFTI and N-heterocyclic carbenes. This method shows excellent stereospecificity and chemoselectivity to give a product with clean inversion of the configuration
醇的直接脱羟基三氟甲基硫醇化是获得含 CF 3 S 化合物的一种有吸引力的策略。在此,我们报告了一种通过使用高价碘 (III) 试剂 TFTI 和 N-杂环卡宾的组合对醇进行脱羟基三氟甲基硫醇化的方法。该方法显示出优异的立体特异性和化学选择性,可生成羟基构型完全反转的产物,并可用于结构复杂的醇的后期改性。反应机理是通过实验和计算证据提出的。
Deacylative Thiolation by Redox‐Neutral Aromatization‐Driven C−C Fragmentation of Ketones
A redox-neutral, heavy-metal-free approach has been developed to realize deacylativethiolation of common ketones, which provides a unique method to introduce thioether groups site-specifically to unactivated aliphatic positions. Experimental and computational mechanistic studies suggest the involvement of a radical chain pathway.