133827-91-5Relevant academic research and scientific papers
Darstellung und Eigenschaften von und Reactionen mit metallhaltigen Heterocyclen. LXXII. Rutheniumhalgite Praekatalysatoren als Speicher fuer reaktive Zwischenstufen bei der katalytischen Cyclotrimerisierung von Alkinen
Lindner, Ekkehard,Kuehbauch, Hartwig
, p. C9 - C14 (2007/10/02)
(η2-C2H4)Ru(CO)4 (1) reacts with the activated alkynes ZCCZ (2a-c, e, g) to give the tricyclic compounds 3a-c, e, g containing two tricarbonylruthenacyclopentadiene rings.The tendency of formation and the yield of 3a-c, e, g is dependent on the steric demand of the substituents R. 3a-c, e, g are precatalysts for the cyclotrimerization of 2a-c, e, g to the benzene derivatives 4a-c, e, g.In the same way 3a cyclotrimerizes 2b, c, e-h (2h: HCCCO2CH3) to 4b, c, e-h.
