A novel approach to the synthesis of naphtho[1,2-b]benzofuran derivatives based on the photochemical reaction of 2,3-disubstituted benzofurans was developed. The studied process includes the photocyclization of the hexatriene system and subsequent aromatization of benzene ring via elimination of water molecule. The starting terarylenes were prepared via a new three-component condensation of phenols, arylglyoxals, and cyclic 1,3-diketones.

中文翻译：

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由2,3-二取代苯并呋喃光化学合成新型萘并[1,2-b]苯并呋喃衍生物

提出了一种基于2,3-二取代苯并呋喃的光化学反应合成萘并[1,2- b ]苯并呋喃衍生物的新方法。研究过程包括己三烯体系的光环化和随后通过消除水分子使苯环芳构化。起始的亚芳基是通过苯酚，芳基乙二醛和环状1,3-二酮的新的三组分缩合制备的。