Synthesis of Alkylidenecyclopropanes by Palladium-Catalyzed Reaction of Propargyl-Substituted Malonate Esters with Aryl Halides by Anti-carbopalladation Pathway
作者:Daishi Fujino、Hideki Yorimitsu、Koichiro Oshima
DOI:10.1021/ja203062z
日期:2011.6.29
Palladium-catalyzed arylative cyclization of propargyl-substituted malonate esters with aryl halides offers a stereoselective approach to alkylidenecyclopropanes. The reaction proceeds by an anti-carbopalladation pathway, which guarantees the exclusive stereocontrol of the resulting double bond. The highly strained as well as densely substituted skeletons of the products facilitate further versatile
钯催化的炔丙基取代丙二酸酯与芳基卤化物的芳基化环化为亚烷基环丙烷提供了立体选择性方法。该反应通过反碳钯化途径进行,这保证了对所得双键的独家立体控制。产品的高度应变和密集取代的骨架促进了进一步的多功能转化,这强调了产品作为合成中间体的重要性。