Synthesis of a novel series of 7-hydroxy-10-aryl-10H-indeno[1,2-b]chromen-11-ones, indeno[1,2-b]naphtho[1,2-e]pyran-12(13H)-one, and indeno[1,2-b]naphtho[3,2-e]pyran-5,11,13-trione catalyzed by reusable polyvinylpolypyrrolidone-supported triflic acid
作者:Syed Sheik Mansoor、Majid Ghashang
DOI:10.1007/s11164-015-1949-x
日期:2015.11
Polyvinylpolypyrrolidone-supported triflic acid (PVPP.OTf) has been used as a recyclable catalyst for synthesis of a series of 7-hydroxy-10-aryl-10H-indeno[1,2-b]chromen-11-one derivatives by condensation of aldehydes, resorcinol, and 2H-indene-1,3-dione. 13-Phenylindeno[1,2-b]naphtho[1,2-e]pyran-12(13H)-one and 12-phenyl-12H-indeno[1,2-b]naphtho[3,2-e]pyran-5,11,13-trione were also synthesized by condensation of benzaldehyde, β-naphthol or 2-hydroxynaphthalene-1,4-dione, and 2H-indene-1,3-dione with PVPP.OTf as catalyst. The heterogeneous catalyst was used for four runs. This method has the advantages of high yields, simple methodology, short reaction times, and easy work-up.
聚乙烯聚吡咯烷酮负载的 triflic 酸(PVPP.OTf)已被用作可回收催化剂,通过醛、间苯二酚和 2H-茚-1,3-二酮的缩合反应合成了一系列 7-羟基-10-芳基-10H-吲哚并[1,2-b]色烯-11-酮衍生物。通过苯甲醛、β-萘酚或 2-羟基萘-1,4-二酮与 2H-茚-1,3-二酮的缩合反应,还合成了 13-苯基吲哚并[1,2-b]萘并[1,2-e]吡喃-12(13H)-酮和 12-苯基-12H-吲哚并[1,2-b]萘并[3,2-e]吡喃-5,11,13-三酮,催化剂为 PVPP.OTf。该非均相催化剂可用于四次循环。这种方法具有高产率、方法简单、反应时间短和操作简便等优点。