Gold-Catalyzed Synthesis of Oxygen- and Nitrogen-Containing Heterocycles from Alkynyl Ethers: Application to the Total Synthesis of Andrachcinidine
作者:Hyung Hoon Jung、Paul E. Floreancig
DOI:10.1021/jo071225w
日期:2007.9.1
containing pendent oxygen or nitrogennucleophiles react with electrophilic gold catalysts in the presence of water to form saturated heterocyclic ketones. Mechanistic studies demonstrated that the reactions proceed through a sequence of alkyne hydration, alkoxy group elimination, and intramolecularconjugateaddition. Diastereoselectivities for tetrahydropyran and piperidine formation are very good to