Divergent gold-catalysed reactions of cyclopropenylmethyl sulfonamides with tethered heteroaromatics
作者:Melanie A. Drew、Sebastian Arndt、Christopher Richardson、Matthias Rudolph、A. Stephen K. Hashmi、Christopher J. T. Hyland
DOI:10.1039/c9cc06241f
日期:——
Cyclopropenylmethyl sulfonamides with tethered heteroaromatics have been demonstrated to undergo divergent gold-catalysed cyclisation reactions. A formal dearomative (4+3) cycloaddition takes place with furan-tethered substrates, yielding densely functionalised 5,7-fused heterocycles related to the bioactive curcusone natural products. Indole-tethered substrates display divergent reactivity giving
环丙烯基甲基磺酰胺与束缚的杂芳族化合物已被证明经历了不同的金催化环化反应。正式的脱芳香基(4 + 3)环加成反应与呋喃连接的底物发生,产生与生物活性姜黄素天然产物相关的致密功能化的5,7-稠合杂环。吲哚束缚的底物表现出不同的反应性,通过弗瑞德-克来福特机制产生了生物学上重要的四氢-β-咔啉。