Exclusive 1,2-Aryl Shift in Platinum(II) Chloride-Catalyzed Cyclization of 1-(Indol-2-yl)-2,3-allenols
作者:Wangqing Kong、Youai Qiu、Xue Zhang、Chunling Fu、Shengming Ma
DOI:10.1002/adsc.201100935
日期:2012.8.13
An efficient cyclization of 1-(indole-2-yl)-2,3-allenols in the presence of platinum(II) chloride leading to polysubstituted carbazoles via 1,2-methyl or an exclusive 1,2-aryl migration of the metal-carbene intermediate was observed. The reaction proceeds via the intermediacy of a metal carbene intermediate, which induces the carbon-carbon bond cleavage via 1,2-migration to afford the products.
1-(吲哚-2-基)-2,3-烯丙醇在氯化铂(II)的存在下有效环化,从而通过金属的1,2-甲基或排他的1,2-芳基迁移导致多取代的咔唑观察到-卡宾中间体。该反应通过金属卡宾中间体的中间体进行,该中间体通过1,2-迁移诱导碳-碳键裂解,得到产物。