关键词: 原子经济, 二芳基硒醚, 氢氧化铯, 炔硒醚

Abstract: Under N₂ atmosphere and at room temperature, the reaction of diaryl diselenid(1.0 mmol) with terminal alkynes(2.2 mmol) catalyzed by cesium hydroxy gave exclusively (Z)-1,2-bis(arylseleno)-1-alkenes, but under air and at -10₀ ℃, the reaction gave alkyne selenides in 83%₉5% yields based on the selenium atoms. The method for the preparation of alkyne selenides has advantages of available starting materials and simple procedures. The reaction mechanism was proposed.

Key words: Catalysis, Atom-economy, Diaryl diselenide, Cesium hydroxide, Alkynyl selenide