<i>Z</i>-Selective (Cross-)Dimerization of Terminal Alkynes Catalyzed by an Iron Complex
作者:Orestes Rivada-Wheelaghan、Subrata Chakraborty、Linda J. W. Shimon、Yehoshoa Ben-David、David Milstein
DOI:10.1002/anie.201601382
日期:2016.6.6
Efficient iron‐catalyzed homocoupling of terminal alkynes and cross‐dimerization of aryl acetylenes with trimethylsilylacetylene is reported. The complex [Fe(H)(BH4)(iPr‐PNP)] (1) catalyzed the (cross‐)dimerization of alkynes at room temperature, with no need for a base or other additives, to give the corresponding dimerized products with Z selectivity in excellent yields (79–99 %).
据报道,有效的铁催化末端炔烃的均偶联和芳基乙炔与三甲基甲硅烷基乙炔的交叉二聚。络合物[Fe(H)(BH 4)(i Pr-PNP)](1)在室温下催化炔烃的(交叉)二聚,无需碱或其他添加剂,即可得到相应的二聚产物与ž在良好的产率(79-99%)的选择性。