Gold-Catalyzed Cascade Friedel−Crafts/Furan−Alkyne Cycloisomerizations for the Highly Efficient Synthesis of Arylated (<i>Z</i>)-Enones or -Enals
作者:Yifeng Chen、Yuhua Lu、Guijie Li、Yuanhong Liu
DOI:10.1021/ol901408u
日期:2009.9.3
An efficient domino approach for the synthesis of arylated (Z)-enones or -enals through gold(I)-catalyzed reactions of enynols with furans was developed. PPh3AuNTf2 was found to be an excellent catalyst to catalyze both of the Friedel−Crafts and furan/alkyne cyclization reactions in the same vessel. This method offers several advantages such as high stereoselectivities, mild reaction conditions, and
通过金(I)催化的烯醇与呋喃的反应,开发了一种有效的多米诺骨牌合成芳基化的(Z)-烯酮或-烯醛的方法。发现PPh 3 AuNTf 2是在同一容器中催化Friedel-Crafts和呋喃/炔烃环化反应的出色催化剂。该方法具有许多优点,例如高的立体选择性,温和的反应条件和易于获得的起始原料。