Gold-Catalyzed Spirocyclization Reactions of <i>N</i>-Propargyl Tryptamines and Tryptophans in Aqueous Media
作者:Nazarii Sabat、Feryel Soualmia、Pascal Retailleau、Alhosna Benjdia、Olivier Berteau、Xavier Guinchard
DOI:10.1021/acs.orglett.0c01370
日期:2020.6.5
derivatives that are readily available from both synthetic and biocatalytic approaches undergo gold-catalyzed dearomative cyclizations in aqueous media to the corresponding spirocyclic derivatives. In addition to the efficiency of the method, operating in aqueous media affords a selective entry to C2-unsubstituted spiroindolenines that have long remained unattainable by Au(I) catalysis. Moderate to excellent
可以从合成和生物催化方法容易获得的N-丙炔基色胺和色氨酸衍生物在水性介质中经历金催化的脱芳香环化反应,形成相应的螺环衍生物。除了该方法的效率以外,在水性介质中操作还提供了选择性进入C2-未取代螺环吲哚胺的选择权,这些化合物长期以来仍无法通过Au(I)催化获得。获得了具有各种取代基的所需螺环产物的中等至优异的产率。