Bicyclic Pyrazolidinone Derivatives from Diastereoselective Catalytic [3 + 3]-Cycloaddition Reactions of Enoldiazoacetates with Azomethine Imines

A highly regio- and diastereoselective synthesis of bicyclic pyrazolidinone derivatives by rhodium(II) acetate catalyzed [3 + 3]-annulation with enoldiazoacetates and azomethine imines has been achieved in high yield. A vinylogous reaction of the metal enol carbene with the azomethine imine initiate...

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Veröffentlicht in:	Organic letters 2013-04, Vol.15 (7), p.1564-1567
Hauptverfasser:	Qian, Yu, Zavalij, Peter J, Hu, Wenhao, Doyle, Michael P
Format:	Artikel
Sprache:	eng
Schlagworte:	Azo Compounds - chemistry Bridged Bicyclo Compounds, Heterocyclic - chemical synthesis Bridged Bicyclo Compounds, Heterocyclic - chemistry Catalysis Cyclization Cycloaddition Reaction Imines - chemistry Methane - analogs & derivatives Methane - chemistry Molecular Structure Pyrazoles - chemical synthesis Pyrazoles - chemistry Rhodium - chemistry Stereoisomerism Thiosemicarbazones - chemistry
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