Vora, Harit U Exploiting Acyl and Enol Azolium Intermediates via NHeterocyclic Carbene Catalyzed Reactions of Alpha-Reducible Aldehydes. [electronic resource] - Advanced synthesis & catalysis Jun 2012 - 1617-1639 p. digital Publication Type: Journal Article ISSN: 1615-4150 Standard No.: 10.1002/adsc.201200031 doi