Stereocontrolled synthesis of 2-alkenyl-4-methylene tetrahydropyrans
作者:Eric C. Hansen、Daesung Lee
DOI:10.1016/j.tetlet.2004.07.063
日期:2004.9
A variety of 2-alkenyl-4-methylene tetrahydropyrans were synthesized via consecutive transition metal-catalyzed bond forming processes. In this approach, ruthenium-catalyzed coupling of homoallylic carbonates and homopropargylic alcohols generates substrates containing the requisite functionality for a palladium-mediated cyclization, thereby providing concise access to the target structures. The installation