In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called CpRuCl-Catalyzed [2 + 2 + 2] Cycloadditions of α,ω-Diynes with Electron-Deficient Carbon-Heteroatom Multiple Bonds Leading to Heterocycles, published in 2005-01-19, which mentions a compound: 92390-26-6, mainly applied to diyne regioselective cycloaddition nitrile heterocumulene ruthenium catalyst mechanism calculation; pyridine fused regioselective preparation; thiopyran fused regioselective preparation, Product Details of 92390-26-6.
In the presence of a catalytic amount of Cp*RuCl(cod), 1,6-diynes, e.g. HCCCH2XCH2CCH [X = CH2, (MeCO)2C, (NC)2C, (MeO2C)2C, 4-MeC6H4SO2N, O, S, etc.], react chemo- and regioselectively with electron-deficient nitriles R1CN (R1 = Cl3C, C6F5, EtO2C, 4-MeC6H4SO2, etc.) and heterocumulenes Y:C:Z (Y = n-PrN, PhN, PhCH2N, cyclohexylamino, etc., Z = O; Y = S, Z = EtO2CN, PhN, PhCON, S, etc.) at 60-90 °C to afford heterocyclic compounds I and II, resp. The mechanism of the ruthenium-catalyzed regioselective formation of bicyclic pyridines and pyridones was analyzed on the basis of d. functional calculations Cyclocotrimerizations of Et propiolate with Et cyanoformate or Pr isocyanate gave rise to two of the four possible pyridine or pyridone regioisomers.
If you want to learn more about this compound(Chloro(1,5-cyclooctadiene)(pentamethylcyclopentadienyl)ruthenium)Product Details of 92390-26-6, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(92390-26-6).
Reference:
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method