Trifluoroacetic Acid Catalyzed Cascade Reactions of 2,3‐Diketoesters with Cyclohexane‐1,3‐diones: Strategy Towards 4‐Hydroxybenzofuran Derivatives
作者:Qiang Sha、Haixuan Liu、Yuan Li
DOI:10.1002/adsc.201900056
日期:2019.4
An efficient trifluoroacetic acid catalyzed cascade reaction of 2,3‐diketoesters with cyclohexane‐1,3‐diones is described for the synthesis of a series of 4‐hydroxybenzofurans. This simple protocol has the advantages of easy operation, readily available starting materials, good functional group tolerance, and easily scale‐up. Subsequent derivatization of the 4‐hydroxybenzofurans provides a reasonable
描述了一种有效的三氟乙酸催化的2,3-二酮酸酯与环己烷-1,3-二酮的级联反应,用于合成一系列的4-羟基苯并呋喃。这种简单的协议具有易于操作,易于获得的起始原料,良好的官能团耐受性和易于放大的优点。随后对4-羟基苯并呋喃进行衍生化提供了一条获得高度官能化苯并呋喃的合理途径。