Transition-Metal-Catalyzed Regiodivergent and Stereoselective Access to Branched and Linear Allylated 4-Pyridones
作者:Johannes P. Schmidt、Changkun Li、Bernhard Breit
DOI:10.1002/chem.201701382
日期:2017.5.11
A regiodivergent and stereoselective transition‐metal‐catalyzed addition of 4‐pyridones to allenes furnishing N‐allylated pyridones is reported. Employing a commercially available chiral rhodium catalyst enabled enantioselective branched‐selective allylation. Conversely, an achiral palladium catalyst led to linear‐selective N‐allylation in high E‐selectivities. A wide range of functional groups was
据报道,在提供N-烯丙基化吡啶酮的丙二烯中,存在区域发散和立体选择性过渡金属催化的4-吡啶酮加成反应。使用可商购的手性铑催化剂可实现对映选择性支链选择性烯丙基化。相反,非手性钯催化剂导致高E选择性的线性选择性N烯丙基化。N烯丙基化吡啶酮的多种合成转化被耐受,证明了它们可用于合成与医学相关的杂环支架。