Selective Intramolecular Palladium(II)-Catalyzed Aminooxygenation<i>vs.</i>Diamination of Alkenylureas: Efficient Microwave-Assisted Reactions to Bicyclic Piperazinones
作者:Gianluigi Broggini、Vincenzina Barbera、Egle M. Beccalli、Ugo Chiacchio、Andrea Fasana、Simona Galli、Silvia Gazzola
DOI:10.1002/adsc.201300104
日期:2013.5.17
Alkenylureas arising from glycineallylamides were proven to be suitable substrates for the synthesis of bicyclic five‐membered ring‐fused piperazinones. The reported intramolecular domino processes, performed under oxidative conditions with bis(acetonitrile)palladium dichloride as catalyst and copper(II) chloride in a stoichiometric amount by microwave activation, were completely selective, involving