Carbazoles from the [4C+2C] Reaction of 2,3-Allenols with Indoles
作者:Binjie Guo、Xin Huang、Chunling Fu、Shengming Ma
DOI:10.1002/chem.201604317
日期:2016.12.19
A mild and efficient method using readily available 1‐aryl‐2,3‐allenols and unprotected‐N indoles, Au+‐catalyzed cyclization, and aromatization to afford the final [4C+2C] products, carbazoles 4, with an excellent selectivity, is reported. The reaction demonstrates excellent regioselectivity and allows the N−H unit to undergo reactivity unprotected. A mechanism involving a spiropolycyclic intermediate
An Efficient Synthesis of Polysubstituted Naphthalene Derivatives by Gold-Catalyzed Cyclization of 1-Arylalka-2,3-dienyl Acetates
作者:Wangqing Kong、Chunling Fu、Shengming Ma
DOI:10.1002/ejoc.201001112
日期:2010.12
An efficient synthetic strategy to generate differently polysubstituted naphthalenes and iodonaphthalenes through a gold-catalyzed cyclization reaction of 1-arylalka-2,3-dienyl acetates was described. Due to the substituent loading capability of both the aromatic ring and the allene moiety, different substituents may be introduced to the different locations of the naphthalenes. A possible mechanism