Intermolecular Hydroamination of Allenes with <i>N</i>-Unsubstituted Carbamates Catalyzed by a Gold(I) <i>N</i>-Heterocyclic Carbene Complex
作者:Robert E. Kinder、Zhibin Zhang、Ross A. Widenhoefer
DOI:10.1021/ol8010858
日期:2008.7.17
Reaction of 2,3-pentadienyl benzoate with benzyl carbamate catalyzed by a 1:1 mixture of (NHC)AuCl and AgOTf in dioxane at 23 degrees C for 5 h led to isolation of (E)-4-(benzyloxycarbonylamino)-2-pentenyl benzoate in 84% yield as a single regio- and diastereomer. Gold(I)-catalyzed hydroamination was effective for a number of N-unsubstituted carbamates and a range of substituted allenes.
2,3-戊二烯基苯甲酸酯与氨基甲酸苄酯的反应由 (NHC)AuCl 和 AgOTf 的 1:1 混合物在二恶烷中在 23 摄氏度下催化 5 小时导致 (E)-4-(苄氧羰基氨基)-2-苯甲酸戊烯酯,作为单一区域和非对映异构体,产率为 84%。金 (I) 催化的加氢胺化对许多 N-未取代的氨基甲酸酯和一系列取代的丙二烯有效。