A Novel Cu-Assisted Cycloisomerization of Alkynyl Imines: Efficient Synthesis of Pyrroles and Pyrrole-Containing Heterocycles
作者:Alexander V. Kel'in、Anna W. Sromek、Vladimir Gevorgyan
DOI:10.1021/ja0058684
日期:2001.3.1
Ruthenium-NHC-Catalyzed Asymmetric Hydrogenation of Indolizines: Access to Indolizidine Alkaloids
作者:Nuria Ortega、Dan-Tam D. Tang、Slawomir Urban、Dongbing Zhao、Frank Glorius
DOI:10.1002/anie.201302218
日期:2013.9.2
complex serves as the catalyst for the high‐yielding and completely regioselective and asymmetrichydrogenation of substituted indolizines and 1,2,3‐triazolo‐[1,5‐a]pyridines. This method should provide ready access to bicyclic products bearing an N‐bridgehead, a motif appearing in 25–30 % of all naturally occurring alkaloids.
越过N桥!钌/ N-杂环卡宾(NHC)络合物可作为取代吲哚嗪和1,2,3-三唑并[1,5- a ]吡啶的高产率,完全区域选择性和不对称氢化的催化剂。该方法应使带有N桥头的双环产物易于获得,该花环出现在所有天然生物碱的25%至30%中。