A Convenient Synthesis of Trifluoromethyl Ethers by Oxidative Desulfurization-Fluorination of Dithiocarbonates
作者:Kiyoshi Kanie、Yoichiro Tanaka、Kazundo Suzuki、Manabu Kuroboshi、Tamejiro Hiyama
DOI:10.1246/bcsj.73.471
日期:2000.2
Trifluoromethyl ethers R-OCF3 are easily synthesized from the corresponding dithiocarbonates R-OCS2Me (R = aryl or primary alkyl) by a reagent system consisting of 70% HF/pyridine and an N-halo imide. When the reaction is applied to R-OCS2Me wherein R = secondary alkyl, tertiary alkyl, or benzylic group, fluorination leading to the corresponding alkyl fluorides R-F is achieved, whereas a combination
三氟甲基醚 R-OCF3 很容易从相应的二硫代碳酸酯 R-OCS2Me(R = 芳基或伯烷基)通过由 70% HF/吡啶和 N-卤代酰亚胺组成的试剂系统合成。当反应应用于 R-OCS2Me 时,其中 R = 仲烷基、叔烷基或苄基,实现了产生相应烷基氟化物 RF 的氟化,而 50% HF/吡啶和 N-溴代琥珀酰亚胺的组合提供相应的三氟甲基醚 R-OCF3(R = 次要)。