Green synthesis of tertiary alkylselanylphosphine chalcogenides via catalyst- and solvent-free addition of secondary phosphine chalcogenides to vinyl selenides
摘要:
Secondary phosphine sulfides and phosphine selenides react with vinyl selenides under mild conditions (80-82 degrees C, without catalyst and solvent) to form regioselectively functionalized anti-Markovnikov adducts in high yield.
Straightforward Solvent-Free Synthesis of Tertiary Phosphine Chalcogenides from Secondary Phosphines, Electron-Rich Alkenes, and Elemental Sulfur or Selenium
作者:Alexander V. Artem'ev、Nataliya A. Chernysheva、Svetlana V. Yas'ko、Nina K. Gusarova、Irina Yu Bagryanskaya、Boris A. Trofimov
DOI:10.1002/hc.21300
日期:2016.1
series of tertiary phosphine sulfides and selenides have been synthesized in excellent yields (88-99%) via a three-component reaction between secondaryphosphines, electron-rich alkenes (styrene, vinyl chalcogenides), and elemental sulfur or selenium, proceeding under solvent-free conditions (80-82°C, 4–44 h). The interaction occurs via initial oxidation of secondaryphosphines with elemental sulfur
通过仲膦、富电子烯烃(苯乙烯、乙烯基硫属化物)和元素硫或硒之间的三组分反应,在溶剂下进行,合成了一系列叔膦硫化物和硒化物,收率极好(88-99%)无条件(80-82°C,4-44 小时)。相互作用是通过二级膦与元素硫或硒的初始氧化,然后将生成的 R2P(E)H (E = S, Se) 非催化反马尔可夫尼科夫加成到烯烃中,以提供相应的具有高化学和区域选择性的加合物.
Radical Addition of Secondary Phosphine Sulfides and Selenides to Vinyl Selenides
The first examples of a facile hydrochalcogenophosphorylation of alkyl vinyl selenides are reported. The regiospecific addition of secondaryphosphinesulfides and phosphine selenides to vinyl selenides proceeds under radical initiation (AIBN, 65-70 °C, 1 h or UV-irradiation, 1 h) to afford the anti-Markovnikov adducts in 87-95% yield.