authors |
Bruno, SM; Gamelas, CA; Gomes, AC; Valente, AA; Pillinger, M; Romao, CC; Goncalves, IS |
nationality |
International |
journal |
CATALYSIS COMMUNICATIONS |
author keywords |
Indenyl complexes; Group 6 metals; Lewis acid catalysts; alpha-Pinene oxide; Isomerisation; Campholenic aldehyde |
keywords |
MEINWALD REARRANGEMENT REACTIONS; ORGANOMETALLIC LEWIS-ACIDS; PI-ALLYL; MIXED-RING; CATALYSTS; PRECURSORS; TETRAFLUOROBORATE; TRANSFORMATIONS; TUNGSTENOCENE; MOLYBDENOCENE |
abstract |
The indenyl complexes IndM(eta(3)-C3H5)(CO)(2) (M= Mo (1), W (2)), (IndMe)Mo(eta(3)-C3H5)(CO)(2) (3) and (IndSiMe(3))Mo(eta(3)-C3H5)(Co)(2) (4) display catalytic activity for the isomerisation of alpha-pinene oxide. Conversion reached 97% after 3 h at 35 degrees 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) to W (2) gave a significantly more active catalyst. (C) 2012 Elsevier B.V. All rights reserved. |
publisher |
ELSEVIER SCIENCE BV |
issn |
1566-7367 |
year published |
2012 |
volume |
23 |
beginning page |
58 |
ending page |
61 |
digital object identifier (doi) |
10.1016/j.catcom.2012.03.006 |
web of science category |
Chemistry, Physical |
subject category |
Chemistry |
unique article identifier |
WOS:000303975400013
|