Palladium-catalyzed carbocyclization–cross-coupling reactions of two different allenic moieties: synthesis of 3-(buta-1,3-dienyl) carbazoles and mechanistic insights
Controlled Heterocyclization/Cross-Coupling Domino Reaction of β,γ-Allendiols and α-Allenic Esters: Method and Mechanistic Insight for the Preparation of Functionalized Buta-1,3-dienyl Dihydropyrans
作者:Benito Alcaide、Pedro Almendros、Teresa Martínez del Campo、M. Teresa Quirós、Elena Soriano、José L. Marco-Contelles
DOI:10.1002/chem.201300774
日期:2013.10.11
Starting from β,γ‐allendiols and α‐allenic acetates, a chemo‐ and regiocontrolled palladium‐catalyzed methodology has provided access to enantiopure 3,6‐dihydropyrans that bear a buta‐1,3‐dienyl moiety. Thus, it has been demonstrated for the first time that the preparation of six‐membered heterocycles through cross‐coupling reactions of two different allenes can be accomplished. These heterocycliz