convergent method for the synthesis of alkenes. Herein, we report a Ru(II)-catalyzed carbene dimerization of cyclopropenes and diazo compounds. The yields are up to 97% and the stereoselectivity are up to >20:1. Mechanistically, it has been experimentally demonstrated that the catalyst reacts with cyclopropene first to generate a Ru(II)–carbene species, which is attacked by nucleophilic diazo substrate
卡宾二聚体的形式化是聚合烯烃的一种收敛方法。在本文中,我们报道了Ru(II)催化的环
丙烯和重氮化合物的卡宾二聚化。产率高达97%,立体选择性高达> 20:1。从机理上讲,已经通过实验证明了该催化剂首先与环
丙烯反应生成Ru(II)-卡宾物种,该物种受到亲核重氮底物的攻击,然后被二氮挤压形成双键。