Palladium-Catalysed Cross-Coupling of Vinyldisiloxanes with Benzylic and Allylic Halides and Sulfonates
作者:Elizabeth C. Frye、Cornelius J. O' Connor、David G. Twigg、Bryony Elbert、Luca Laraia、David G. Hulcoop、Ashok R. Venkitaraman、David R. Spring
DOI:10.1002/chem.201200431
日期:2012.7.9
formation. To date, the substrate scope of this reaction has predominantly been limited to sp2–sp2 coupling reactions. Herein, the palladium‐catalysed Hiyama type cross‐coupling of vinyldisiloxanes with benzylic and allylic bromides, chlorides, tosylates and mesylates is reported. A wide variety of functional groups were tolerated, and the synthetic utility of the methodology was exemplified through
桧山交叉偶联反应是一种强有力的碳-碳键形成方法。迄今为止,该反应的底物范围主要限于 sp 2 -sp 2偶联反应。在此,报道了钯催化的 Hiyama 型乙烯基二硅氧烷与苄基和烯丙基溴化物、氯化物、甲苯磺酸盐和甲磺酸盐的交叉偶联。耐受多种官能团,该方法的合成效用通过细胞毒性天然产物 bussealin A 的有效全合成来例证。此外,在两个癌细胞系中评估了 bussealin A 的抗增殖能力。