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‐Catalyzed Cycloisomerization of Ynamides: Chemoselective and Divergent Access to Indole Derivatives
作者:Bo‐Han Zhu、Sheng‐Bing Ye、Min‐Ling Nie、Zhong‐Yang Xie、Yi‐Bo Wang、Peng‐Cheng Qian、Qing Sun、Long‐Wu Ye、Long Li
DOI:10.1002/anie.202215616
日期:2023.2.13
developed, allowing various bis(indole) derivatives in good to excellent yields with wide substrate scope, which not only represents the first molecular iodine-catalyzed tandem complex alkyne cycloisomerizations but also constitutes the first chemoselective cycloisomerization of tryptamine-ynamides involving distinctively different C−C (alkyl) bond cleavage and rearrangement.
Gold-Catalyzed Intramolecular Regio- and Enantioselective Cycloisomerization of 1,1-Bis(indolyl)-5-alkynes
作者:Long Huang、Hai-Bin Yang、Di-Han Zhang、Zhen Zhang、Xiang-Ying Tang、Qin Xu、Min Shi
DOI:10.1002/anie.201302632
日期:2013.6.24
Bis(indole) alkaloids analogues were prepared under mild conditions and in high yields through a gold‐catalyzed cycloisomerization of 1,1‐bis(indolyl)‐5‐alkynes (see scheme). The enantioselective version of this reaction gave the corresponding products in moderate to excellent yields (55–90 %), moderate to good ee values (48–96 %), and satisfactory regioselectivities (3.5:1→20:1).