Fulvenes as effective dipolarophiles in copper(I)-catalyzed [6+3] cycloaddition of azomethine ylides: asymmetric construction of piperidine derivatives

Angew Chem Int Ed Engl. 2013 Mar 4;52(10):2934-8. doi: 10.1002/anie.201208799. Epub 2013 Jan 30.
No abstract available