A borane-mediated palladium-catalyzed reductive allylic alkylation of α,β-unsaturated carbonyl compounds
作者:Barry M. Trost、Zhijun Zuo、Johnathan E. Schultz、Nagaraju Anugula、Katherine A. Carr
DOI:10.1039/c9sc05970a
日期:——
generated boron enolates via tandem 1,4-hydroboration is reported. Investigation of the reaction revealed insights into specific catalyst electronic features as well as a profound leaving group effect that proved crucial for achieving efficient allylic alkylation of ester enolates at room temperature and ultimately a highly preparatively useful synthesis of notoriously challenging acyclic all-carbon quaternary
据报道,通过串联的1,4-氢硼化反应,钯催化的原位生成的硼烯酸酯的烯丙基烷基化反应的发展。对反应的研究揭示了对特定催化剂电子特性的深刻见解,以及深刻的离去基团效应,这对于在室温下实现酯烯醇酯的有效烯丙基烷基化,以及最终以极富挑战性的无环全碳四元立体中心的合成制备至关重要。该方法证明了硼烯醇盐在过渡金属催化的烯丙基烷基化反应中作为可行的亲核亲核试剂,有可能在其传统用途之外开拓进一步的转化。