Platinum-catalyzed anti-stereocontrolled ring-opening of oxabicyclic alkenes with Grignard reagents
作者:Dingqiao Yang、Ni Liang
DOI:10.1039/c3ob42199f
日期:——
A new platinum-catalyzed anti-stereocontrolled ring-opening of oxabicyclic alkenes with various Grignard reagents was reported, which afforded the corresponding anti-2-substituted-1,2-dihydronaphthalen-1-ol products with moderate to good yields in the presence of a catalytic amount of Pt(PPh3)4 (2.5 mol%) under mild conditions. The effects of catalyst loading, solvent and temperature on the yield were
报道了一种新的铂催化的各种格氏试剂对氧杂双环烯烃的反立体控制开环,在存在丁二酮的情况下提供了中等至良好收率的相应的抗-2-取代-1,2-二氢萘-1-醇产物。在温和条件下催化量的Pt(PPh 3)4(2.5 mol%)。还研究了催化剂用量,溶剂和温度对产率的影响。此外,通过X射线衍射分析确认了产物5i的反式构型。