The gold(I)-catalyzed endo-cyclization of o-(1-hydroxyallyl)phenols to form chromenes is reported. The title compounds are prepared in high yield from readily available substrates. The system tolerates both electron rich and deficient aryl rings and a high degree of substitution on the allyl moiety.
报道了
金(I)催化的o-(1-羟基烯丙基)
苯酚内环化反应以形成色烯类化合物。该标题化合物从容易获得的底物中以高产率制备。该系统能耐受富电子和缺电子的芳香环以及烯丙基部分的高程度取代。