with 2-hydroxy-2,2′-biindan-1,1′,3,3′-tetrone 1 in an acid medium producing 2-aryl/alkyl-2,2′-biindan-1,1′,3,3′-tetrones in high yields. The adducts of resorcinol, 1,3,5-trihydroxybenzene and α- and β-naphthols of 1 preferably remain in the intramolecular hemi-ketal form, confirmed by X-ray diffraction studies. On the other hand para and meta substituted phenols condense with 1 in an acid medium to
各种
酚,甲氧基芳族化合物,3-和
4-羟基
香豆素和烯醇在产生2-芳基/的酸性介质中与2-羟基-2,2'-biindan-1,1',3,3'-四烯1平稳缩合。烷基-2,2'-biindan-1,1',3,3'-四烯的收率很高。
间苯二酚,1,3,5-三羟基苯和的α-和β
萘酚的加合物1优选保持在分子内半
缩酮形式,其通过X射线衍射研究所证实。另一方面,对位和间位取代的
苯酚在酸性介质中与1缩合,以高收率生产6或7个取代的2',4-螺(1',3'-
茚满)-
茚并[3,2- b ]色烯。 。