efficient method was developed for the synthesis of substituted naphtho[1,2-b]benzofuran-7(8H)-ones based on the photorearrangement reaction of 4H-chromen-4-one derivatives. The studied reaction includes the photocyclization of the hexatriene system, [1,9]-H-sigmatropic rearrangement and heterocyclic ring opening. The starting terarylenes were prepared via a new three-component tandem condensation of 3-(
基于4 H -chromen-4-one衍
生物的光重排反应,开发了一种简单高效的合成取代
萘[1,2 - b ]
苯并呋喃-7(8 H)-的方法。研究的反应包括己
三烯系统的光环化,[1,9] -H- σ重排和杂环开环。起始亚芳基是通过3-(二甲基
氨基)-1-(2-羟基芳基)丙-2-烯-1-酮,芳基
乙二醛和环状1,3-二酮的新三组分串联缩合制备的。