Synthesis of 5-Vinyl-2-isoxazolines by Palladium-Catalyzed Intramolecular <i>O</i>-Allylation of Ketoximes
作者:Rodney A. Fernandes、Ashvin J. Gangani、Arpita Panja
DOI:10.1021/acs.orglett.1c01897
日期:2021.8.20
An efficient method for the synthesis of 5-vinyl-2-isoxazolines by Pd-catalyzed intramolecular O-allylation of ketoximes has been developed. The reaction involves Pd(0)-catalyzed π-allyl formation via leaving group ionization or Pd(II)-catalyzed allylic C–H activation followed by intramolecular nucleophilic oxime oxygen attack. This methodology has been elaborated to various value-added products by
已开发出一种通过 Pd 催化的酮肟分子内O-烯丙基化合成 5-乙烯基-2-异恶唑啉的有效方法。该反应涉及 Pd(0) 催化的 π-烯丙基形成,通过离去基团电离或 Pd(II) 催化的烯丙基 C-H 活化,然后是分子内亲核肟氧攻击。这种方法已经通过环氧化、瓦克氧化、交叉复分解、硼氢化-氧化、二羟基化和催化氢化等多种增值产品进行了阐述。