Aldehyde Umpolung by N??Heterocyclic Carbenes: NMR Characterization of the Breslow Intermediate in its Keto Form, and a Spiro??Dioxolane as the Resting State of …
A Berkessel, S Elfert…
文献索引:Angewandte Chemie - International Edition, , vol. 49, # 39 p. 7120 - 7124