Pentannulation Reaction by Tandem Gold(I)-Catalyzed Propargyl Claisen Rearrangement/Nazarov Cyclization of Enynyl Vinyl Ethers
作者:Antonia Rinaldi、Martina Petrović、Stefano Magnolfi、Dina Scarpi、Ernesto G. Occhiato
DOI:10.1021/acs.orglett.8b02141
日期:2018.8.3
The tandem gold(I)-catalyzed propargyl Claisen rearrangement/Nazarov cyclization of propargyl vinyl ether derivatives, followed by in situ reduction of the resulting carbonyl group, provides functionalized cyclopentadienes fused with various N-hetero- and carbacycles, including indoles, in good to excellent yields. The reaction occurs with high regioselectivity, with the position of the double bonds
串联金(I)催化的炔丙基乙烯基醚衍生物的炔丙基克莱森重排/纳扎罗夫环化反应,然后原位还原生成的羰基,可提供功能化的环戊二烯与各种N-杂环和碳环化合物(包括吲哚)融合,优异的产量。该反应以高区域选择性进行,五元环中双键的位置取决于带有炔丙基部分和后者侧链的(杂)环的类型。