336142-18-8Relevant academic research and scientific papers
Alkyne insertion into the Ru-C bond of a four-membered metallacycle. Insertion rate and reaction pathway
Ghosh, Kaushik,Chattopadhyay, Swarup,Pattanayak, Sujay,Chakravorty, Animesh
, p. 1419 - 1423 (2008/10/08)
The insertion of HOCH2C≡CH(ha) into the Ru-C bond of RuII(RL1)(PPh3)2(CO)Cl, 1, has afforded RuII(RL3)(PPh3)2(CO)Cl, 3, which has been structurally characterized. Insertion rates in CH2Cl2-MeOH for ha as well as for PhC≡CH (pa), which inserts similarly into 1 affording RuII(RL2)(PPh3)2(CO)Cl, 2, are proportional to the product of the concentrations of alkyne and methanol. The insertion rate of ha is nearly 5 times faster than that of pa, and for a given alkyne the rate increases as R becomes more electron-withdrawing (OMe A reaction model implicating the adduct 1·MeOH, which binds and activates the alkyne via displacement of MeOH, is proposed.
