Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Organometallics called Synthesis of Naphthoquinone-Fused Cyclobutadiene Ruthenium Complexes, Author is Yamamoto, Yoshihiko; Arakawa, Takayasu; Itoh, Kenji, which mentions a compound: 92390-26-6, SMILESS is [Cl-][Ru+2]1234567(C8(C)=C4(C)[C-]5(C)C6(C)=C87C)[CH]9=[CH]1CC[CH]2=[CH]3CC9, Molecular C18H28ClRu, Safety of Chloro(1,5-cyclooctadiene)(pentamethylcyclopentadienyl)ruthenium.
A coordinatively unsaturated ruthenacycle, which was formed from Cp*RuCl(cod) and 1,2-bis(phenylpropiolyl)benzene, was isomerized to a new sandwich complex consisting of a Cp* and a naphthoquinone-fused cyclobutadiene ligand at ambient temperature However, the treatment of the same ruthenacycle with excess AgBF4 at room temperature produced a tetramethylfulvene cyclobutadiene complex. In contrast, a cationic cyclobutadiene complex was formed from the isolated Cp*RuCl(cyclobutadiene) with excess AgBF4.
After consulting a lot of data, we found that this compound(92390-26-6)Safety of Chloro(1,5-cyclooctadiene)(pentamethylcyclopentadienyl)ruthenium can be used in many types of reactions. And in most cases, this compound has more advantages.
Reference:
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method