Highly Active Au(I) Catalyst for the Intramolecular <i>e</i><i>xo</i>-Hydrofunctionalization of Allenes with Carbon, Nitrogen, and Oxygen Nucleophiles
作者:Zhibin Zhang、Cong Liu、Robert E. Kinder、Xiaoqing Han、Hua Qian、Ross A. Widenhoefer
DOI:10.1021/ja062045r
日期:2006.7.19
Au-catalyzed intramolecularhydroalkoxylation within minutes at room temperature to form the corresponding oxygen heterocycles in good yield with high exo-selectivity. 2-Allenyl indoles underwent Au-catalyzed intramolecular hydroarylation within minutes at room temperature to form 4-vinyl tetrahydrocarbazoles in good yield. Au-catalyzed cyclization of N-allenyl carbamates, allenyl alcohols, and 2-allenyl
A Re2O7 catalyzed cycloetherification of monoallylic diols is described. The reaction features short reaction time, mild reaction conditions and exclusive E selectivity. A wide range of monoallylic alcohols with alkyl or aryl substituents on olefin smoothly undergo ring closure to deliver corresponding oxa-heterocycles. The reaction is also operationally simple and not sensitive to air and moisture
描述了Re 2 O 7催化的单烯丙基二醇的环醚化。该反应具有反应时间短,反应条件温和和E选择性高的特点。烯烃上具有烷基或芳基取代基的各种单烯丙基醇可平稳地进行闭环反应,以生成相应的氧杂杂环。该反应在操作上也很简单,并且对空气和湿气不敏感。
Lemee, Laurent; Bourgeois, Marie-Josephe; Montaudon, Evelyne, Bulletin des Societes Chimiques Belges, 1996, vol. 105, # 8, p. 467 - 472