Palladium-Catalyzed Sequential Alkylation−Alkenylation Reactions: New Three-Component Coupling Leading to Oxacycles
摘要:
[GRAPHICS]A new three-component domino reaction catalyzed by palladium was devised, producing polysubstituted bicyclic molecules in good yields from readily available substrates. The reaction conditions and the scope of the process were examined, and a possible mechanism is proposed.
Direct, One-Step Synthesis of Condensed Heterocycles: A Palladium-Catalyzed Coupling Approach
作者:Farnaz Jafarpour、Mark Lautens
DOI:10.1021/ol061404k
日期:2006.8.1
[reaction: see text] A palladium-catalyzed one-stepsynthesis of fused aromatic heterocycles from bifunctional bromoenoates or bromoalkyl indoles and iodoarenes is reported. This method provides an efficient route to a wide variety of substituted polycyclic aromatic and heteroaromatic compounds from readily accessible starting materials.
A straightforward method for the synthesis of highlyfunctionalizedvinylarenes through palladium‐catalyzed, norbornene‐mediated CHactivation/carbene migratory insertion is described. Extension to a one‐pot procedure is also developed. Furthermore, this method can also be used to generate polysubstituted bicyclic molecules. The reaction proceeds under mild conditions to give the products in satisfactory