Dual Gold-Catalyzed Three-Component Reaction: Efficient Synthesis of Indene-Fused Esters, Acids, and Lactones through Gold Vinylidene Intermediates
作者:Congjun Yu、Xiaodong Ma、Bin Chen、Bencan Tang、Robert S. Paton、Guozhu Zhang
DOI:10.1002/ejoc.201700084
日期:2017.3.17
A dual gold(I)‐catalyzed three‐component reaction is developed to prepare indene‐fused carboxylic acid derivatives from diynes, alcohols, and pyridine N‐oxides in both inter‐ and intramolecular fashions. Pyridine N‐oxides exhibit unique reactivity and selectivity to oxidize the gold vinylidene. Experimental studies and DFT calculations support ketene formation as the key step.
开发了一种双金(I)催化的三组分反应,以分子间和分子内方式由二炔,醇和吡啶N-氧化物制备茚稠合的羧酸衍生物。吡啶N-氧化物具有独特的反应性和选择性,可以氧化亚乙烯基金。实验研究和DFT计算支持乙烯酮的形成为关键步骤。