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ChemInform Abstract: Zr(HSO4)4-Catalyzed One-Pot Three-Component Synthesis of 7-Alkyl-6H,7H-naphtho[1′,2′:5,6]pyrano[3.2-c]chromen-6-ones.

✍ Scribed by Xiao Wang; Guangzhou Lu; Fulin Yan; Weiwei Ma; Liqiang Wu


Book ID
112043158
Publisher
John Wiley and Sons
Year
2012
Weight
25 KB
Volume
43
Category
Article
ISSN
0931-7597

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Zr(HSO4)4-catalyzed one-pot three-compon
✍ Xiao Wang; Guangzhou Lu; Fulin Yan; Weiwei Ma; Liqiang Wu 📂 Article 📅 2011 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 83 KB

## Abstract A new, one‐pot, simple thermally efficient and solvent‐free method for the preparation of 7‐alkyl‐6__H__,7__H__‐naphtho[1′,2′:5,6]pyrano[3,2‐__c__]chromen‐6‐ones by condensation of β‐naphthol, aromatic aldehydes, and 4‐hydroxycoumarin using Zr(HSO~4~)~4~ as a safe and efficient catalyst