Nickel-catalyzed <i>syn</i>-stereocontrolled ring-opening of oxa- and azabicyclic alkenes with dialkylzinc reagents
作者:Yingying Deng、Wen Yang、Yongqi Yao、Xin Yang、Xiongjun Zuo、Dingqiao Yang
DOI:10.1039/c8ob02864h
日期:——
A new nickel-catalyzed syn-stereocontrolled ring-opening of oxa- and azabicyclic alkenes with dialkylzinc reagents was developed, which afforded the corresponding cis-2-alkyl-1,2-dihydronaphthalen-1-ols and 1,2-alkyl amide derivatives in moderate to excellent yields (up to 99% yield) under mild conditions. In this work, we successfully avoided obtaining hydride addition byproducts arising from β-hydride
用二烷基锌试剂开发了一种新的镍催化的氧杂-和氮杂双环烯烃的顺式立体控制开环反应,得到相应的顺式-2-烷基-1,2-二氢萘-1-醇和1,2-烷基酰胺衍生物在温和的条件下,以中等至优异的产量(高达99%的产量)。在这项工作中,我们成功地避免了由于在乙基镍物质上消除β-氢化物而产生的氢化物加成副产物。此外,还提出了一种可能的开环反应机理。