Phospho sulfonic acid as efficient heterogeneous Bronsted acidic catalyst for one-pot synthesis of 14H-dibenzo[a,j]xanthenes and 1,8-dioxo-octahydro-xanthenes

被引：28

作者：

Rezayati, Sobhan ^{[1
]}

Erfani, Zahra ^{[1
]}

Hajinasiri, Rahimeh ^{[1
]}

机构：

[1] Islamic Azad Univ, Dept Chem, Qaemshahr Branch, Qaemshahr, Iran

来源：

CHEMICAL PAPERS | 2015年 / 69卷 / 04期

关键词：

phospho sulfonic acid; Bronsted acidic catalyst; aryl-14H-dibenzo[a; j]xanthenes; 1,8-dioxo-octahydro-xanthenes; solvent-free conditions; reuse of catalyst; SOLVENT-FREE SYNTHESIS; XANTHENE DERIVATIVES; REUSABLE CATALYST; HIGHLY EFFICIENT; IONIC LIQUID; CHEMOSELECTIVE SYNTHESIS; PROMOTED SYNTHESIS; MILD; ALDEHYDES; FACILE;

D O I：

10.1515/chempap-2015-0058

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A simple, efficient procedure for the preparation of phospho sulfonic acid PO(OSO3H)(3) as a Bronsted acidic and recoverable heterogeneous catalyst is described, used for the one-pot synthesis of aryl-14H-dibenzo[a,j]xanthenes and 1,8-dioxo-octahydro-xanthenes. A cost-effective, simple and convenient procedure for the synthesis of aryl-14H-dibenzo[a,j]xanthenes was developed via a onepot condensation from substituted benzaldehydes and beta-naphthol under solvent-free conditions. The one-pot condensation of substituted benzaldehydes and 5,5-dimethyl-1,3-cyclohexanedione (dimedone) under solvent-free conditions leads to 1,8-dioxo-octahydro-xanthenes. These protocols afford a number of advantages, such as: excellent yields, very short reaction times, easy procedure, simple methodology and ease of preparation and regeneration of the catalyst. (c) 2014 Institute of Chemistry, Slovak Academy of Sciences

引用

页码：536 / 543

页数：8

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