作者:Søren Kramer、Troels Skrydstrup
DOI:10.1002/anie.201200307
日期:2012.5.7
example of a gold‐catalyzed intermolecular addition of carbon ylides to terminal alkynes is reported (see scheme; DCE=dichloroethane, Tf=trifluoromethanesulfonyl). Subsequent intramolecular trapping of the generated gold carbene completes a formal [3+2] cycloaddition, which represents a novel synthesis of 2,4‐disubstituted furans.
黄金的呋喃:报道了第一个金碳分子间加成碳烷基化物到末端炔烃的例子(见方案; DCE =二氯乙烷,Tf =三氟甲磺酰基)。随后生成的金卡宾的分子内捕集完成了正式的[3 + 2]环加成反应,这代表了2,4-二取代呋喃的新型合成。