The catalytic activity of commercially available, air and water stable ruthenium complexes in the addition of carboxylic acids to terminal alkynes was found to be drastically enhanced by the addition of small quantities of base. Moreover, the regioselectivity of the reaction can be controlled by the choice of the base so that both the Markovnikov (Na2CO3) and the anti-Markovnikov products (DMAP) are now easily accessible in excellent selectivities.
商业可得的,在空气和
水中稳定的
钌配合物在
羧酸与末端
炔烃加成反应中的催化活性,采用少量碱的添加后显著增强。此外,反应的区域选择性可以通过选择不同的碱来控制,从而使得Markovnikov(Na2CO3)和反Markovnikov产物(
DMAP)都能以优良的选择性轻松获得。