The transition metal-catalyzed addition of C-H bonds in aromatic hydrazones to olefins

Catalytic additions of C-H bonds in aromatic hydrazones to olefins proceede d with the aid of ruthenium or rhodium complexes. Several hydrazones can be used in the chelation-assisted C-W olefin coupling described herein. When a Ru-3(CO)(12) complex was used as the catalyst, a mixture of the 1:1 addit ion product, along with the corresponding dehydrogenated coupling products was obtained. In the case of the reaction using RhCl(PPh3)(3)-catalyst, no dehydrogenated coupling product was obtained and the 1:2 addition product w as produced as the major product.