P-TSA-catalyzed one-pot synthesis of novel 7-aryl-6H-benzo[h][1, 3]dioxolo[4, 5-b]xanthene-5, 6(7H)-diones in ethanol. Issue 1 (2nd January 2017)

• Record Type: Journal Article
• Authors: Qian, Kai; Fu, Zhijie; Cao, Xiaoji; Li, Sijun; Shen, Tianhua; Song, Qingbao
• Is Part Of: Synthetic communications. Volume 47:Issue 1(2017)
• Page Start: 37
• Page End: 43
• Publication Date: 2017-01-02
• Subjects: MCRs -- one-pot -- p-TSA; Organic compounds -- Synthesis -- Periodicals; Chemistry, Organic; Synthesis; 547.205
• DOI: 10.1080/00397911.2016.1249287
• Languages: English
• ISSNs: 0039-7911

Abstract

ABSTRACT: A one-pot, three-component reaction of aromatic aldehydes, 2-hydroxy-1, 4-naphthoquinone, and 3, 4-methylenedioxyphenol has been reported for the synthesis of novel 7-aryl-6H-benzo[h][1, 3]dioxolo[4, 5-b]xanthene-5, 6(7H)-diones using environmentally benevolent para -toluene sulfonic acid ( p -TSA) as the catalyst. This methodology provides a mild and fast route to diverse pyran derivatives in moderate to good yields. GRAPHICAL ABSTRACT: