Palladium-Catalyzed Oxidative Intermolecular Difunctionalization of Terminal Alkenes with Organostannanes and Molecular Oxygen
作者:Kaveri Balan Urkalan、Matthew S. Sigman
DOI:10.1002/anie.200900218
日期:2009.4.14
palladium complex catalyzes the title transformations, which are thought to proceed via a π‐allyl or π‐benzyl intermediate. The regioselectivity of the reaction (1,2‐ or 1,1‐difunctionalization) depends on the type of terminal double bond (conjugated or nonconjugated) in the substrate (see scheme) and appears to be controlled by the relative rates of β‐hydride elimination and transmetalation. DMA=dimethylacetamide
阳离子钯配合物催化标题转化,这被认为是通过 π-烯丙基或 π-苄基中间体进行的。反应的区域选择性(1,2-或 1,1-双官能化)取决于底物中末端双键(共轭或非共轭)的类型(见方案),似乎受 β-氢化物的相对速率控制消除和转移。DMA=二甲基乙酰胺,Tf=三氟甲磺酸。