Formation of molybdenum-η4-trimethylenemethane cations through carbon–carbon bond formation
Abstract
In the presence of BF3·Et2O, the molybdenum–η3-allyl complex [Mo(η5-C5H5)(CO)2{η3-anti-1-Me, 2-(CH2CPh)C3H3}] reacts with benzaldehyde, methyl vinyl ketone and acetone to give the corresponding η4-trimethylenemethane cations; the crystal structure of a pyran complex generated from such cations and of a related complex are reported.