New types of palladium(II)-catalyzed intramolecular 1,4-dialkoxylation of 1,3-cyclohexadienes are described. The reactions proceed with high regio- and stereoselectivity and provide an efficient route to novel stereodefined heterocycles such as oxaspirocyclic compounds and fused pyrans.
描述了新型的
钯(II)催化的
1,3-环己二烯的分子内1,4-二烷氧基化。反应以高度的区域选择性和立体选择性进行,并提供了通往新型立体定义的杂环(例如氧杂
螺环化合物和稠合
吡喃)的有效途径。