On the Viability of Oxametallacyclic Intermediates in the (salen)Mn‐Catalyzed Asymmetric Epoxidation
1997; Wiley; Volume: 36; Issue: 16 Linguagem: Inglês
10.1002/anie.199717201
ISSN1521-3773
AutoresNathaniel S. Finney, Paul J. Pospisil, Sukbok Chang, Michael Palucki, Reed G. Konsler, Karl B. Hansen, Eric N. Jacobsen,
Tópico(s)Organic Chemistry Cycloaddition Reactions
ResumoA mechanism that is simpler than the recently advanced is followed for the (salen)Mn-catalyzed asymmetric epoxidation of olefins. Oxametallacycles such as B or B′ are not viable intermediates; radical species such as A, which are directly formed by attack of the olefin on the oxomanganese catalyst are more likely candidates; salen N,N′-bis(salicylidene)ethylenediamine dianion.
Referência(s)