Perfluoroalkyl Analogues of Diethylaminosulfur Trifluoride: Reagents for Perfluoroalkylthiolation of Active Methylene Compounds under Mild Conditions
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- 作者：Ibrayim Saidalimu ; Shugo Suzuki ; Takuya Yoshioka ; Etsuko Tokunaga ; Norio Shibata
- 刊名：Organic Letters
- 出版年：2016
- 出版时间：December 16, 2016
- 年：2016
- 卷：18
- 期：24
- 页码：6404-6407
- 全文大小：404K
- ISSN：1523-7052
文摘
Trifluoromethyl diethylaminosulfur difluoride (CF3-DAST) was found to be an efficient reagent for the trifluoromethylthiolation of α-methylene-β-keto esters providing α-trifluoromethylthio-β-keto esters in good to high yields. α-Methylene-β-keto sulfones were also accepted as substrates by CF3-DAST to furnish the corresponding α-trifluoromethylthio compounds. This strategy can be extended to perfluoroalkylthiolation reactions using perfluoroethyl-DAST (C2F5-DAST) and perfluoropropyl-DAST (C3F7-DAST).