Synergistic N‐Heterocyclic Carbene/Palladium‐Catalyzed Umpolung 1,4‐Addition of Aryl Iodides to Enals
作者:Wenjun Yang、Bo Ling、Bowen Hu、Haolin Yin、Jianyou Mao、Patrick J. Walsh
DOI:10.1002/anie.201912584
日期:2020.1.2
promoted by cooperative (terpy)Pd/NHC catalysis was developed that generates various bioactive β,β-diaryl propanoate derivatives. This system is not only the first reported palladium-catalyzed arylation of NHC-bound homoenolates but also expands the scope of NHC-induced umpolung transformations. A diverse array of functional groups such as esters, nitriles, alcohols, and heterocycles are tolerated under
开发了一种由配合式(叔)Pd / NHC催化促进的将碘化芳基碘化为1,4-烯醇的化合物,可生成各种具有生物活性的β,β-二芳基丙酸酯衍生物。该系统不仅是首次报道的钯催化的NHC结合的均烯酸酯的芳基化反应,而且扩大了NHC诱导的umpolung转化的范围。在温和的条件下可以耐受各种官能团,例如酯,腈,醇和杂环。该方法还规避了对湿气敏感的有机金属试剂的使用。