32291-88-6Relevant academic research and scientific papers
Preparation method of thioether derivative
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Paragraph 0026-0029, (2021/08/28)
The invention discloses a preparation method of a thioether derivative, which comprises the following steps: (1) in a nitrogen atmosphere, mixing a sulfoxide compound, an olefin compound/alkyne compound/1, 3-dicarbonyl compound, an organic solvent and trifluoroacetic anhydride/trifluoromethanesulfonic anhydride, and reacting at 0-60 DEG C for 1-24 hours; (2) adding alkali into the material obtained in the step (1), reacting at room temperature for 0.5-1.5 hours, and washing with water to obtain an organic phase; and (3) carrying out post-treatment and purification on the organic phase obtained in the step (2) to obtain the thioether derivative. The method is suitable for constructing alkenyl thioether, alkynyl thioether and alkyl thioether derivatives at the same time, and is high in universality. The method has the advantages of easily available raw materials, high yield, mild reaction conditions, short reaction time, wide substrate range, strong reaction specificity, and simple and green post-treatment.
Transition Metal-Free C-H Thiolation via Sulfonium Salts Using β-Sulfinylesters as the Sulfur Source
Chen, Yanhui,Wen, Si,Tian, Qingyu,Zhang, Yuqing,Cheng, Guolin
, p. 7905 - 7909 (2021/10/20)
We disclose a direct C(sp)-, C(sp2)-, and C(sp3)-H thiolation reaction using β-sulfinylesters as the versatile sulfur source. The key step of this protocol is chemoselective C-S bond cleavage of the sulfonium salts that are formed in situ from the corresponding alkenes, alkynes, and 1,3-dicarboxyl compounds with β-sulfinylesters. The successful capture of the acrylate byproduct supports a retro-Michael reaction mechanism.
