Catalina Ferrer, Mihai Raducan, Cristina Nevadoet al.
and Platinum(II)-Catalyzed Cyclization of 1,6-Enynes. -In the presence of Pt(II) catalysts, enynes of type (I)/(VII) undergo less common 6-endo-dig cyclization to fused pyran derivatives such as (II) and (VIII). Starting from simple enynes like (XV), skeletal rearrangement takes place which affords products of type (XVI), (XVII) and/or (XVIII). Using Au(I) catalysts, some enynes undergo unexpected rearrangement to oxepins, bicyclic or polycyclic ring systems. The cyclization of dienynes does not give desired …
scite is a Brooklyn-based startup that helps researchers better discover and evaluate scientific articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by researchers from dozens of countries and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.