Bruno, S. M.Gamelas ou Carla A. Gamelas, CarlaGomes, A. C.Valente, A.Pillinger, M.Romão, C.Gonçalves, I.2018-03-222018-03-222012Bruno, S., Gamelas, C., Gomes, A., Valente, A., Pillinger, M., Romão, C. & Gonçalves, I. (2012). Isomerization of alfa-pinene oxide in the presence of indenyl allyl dicarbonyl molybdenum(II) and tungsten(II) complexes. Catalysis Communications, 23, pp. 58-61. doi: 10.1016/j.catcom.2012.03.006http://hdl.handle.net/10400.26/22035The indenyl complexes IndM(η3-C3H5)(CO)2 (M=Mo (1), W (2)), (IndMe)Mo(η3-C3H5)(CO)2 (3) and (IndSiMe3)Mo(η3-C3H5)(CO)2 (4) display catalytic activity for the isomerisation of α-pinene oxide. Conversion reached 97% after 3 h at 35 °C in the presence of 1 and 1,2-dichloroethane as solvent, giving campholenic aldehyde in 56% yield. Solvent polarity and basicity appear to affect the reaction rate. Whereas the type of substituent on the indenyl ligand does not appear to have a strong impact on catalytic performance, changing the metal centre from Mo (1) toW(2) gave a significantly more active catalyst.engjournal article10.1016/j.catcom.2012.03.006