Under N\-2 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 u...Under N\-2 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.展开更多
文摘Under N\-2 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.
