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
通过连续的过渡金属催化的键形成过程合成了各种2-烯基-4-亚甲基四氢吡喃。在这种方法中,钌催化的均烯丙基碳酸酯和均丙炔醇的偶联生成的底物包含钯介导的环化所需的官能度,从而为目标结构提供了简洁的通道。使用烯烃交叉复分解方法实现在C-2位的三取代烯烃的安装。