Quiros Lopez, Maria and Gomez-Bengoa, Enrique and Munoz-Herranz, Maria Paz (2019) Unravelling mechanistic insights in the platinum-catalysed dihydroalkoxylation of allenes. Pure and Applied Chemistry, 92 (1). pp. 167-177. ISSN 0033-4545
Full text not available from this repository.Abstract
The mechanism of the platinum-catalysed dihydroalkoxylation of allenes to give acetals has been studied experimentally and by computational methods. Our findings further explain divergent reactivity encountered for platinum- and gold-vinyl intermediates after the first nucleophilic attack onto the coordinated allene, as well as provide new details on the catalytic cycle with platinum, uncovering enol ethers as resting states of the catalytic cycle, a S(E)Ox process via Pt(V)-H as the final protodemetallation step after the second nucleophilic attack when neutral platinum complexes are used, and a fast acid promoted addition of methanol to enol ethers when cationic platinum complexes are employed.