ChemInform Abstract: A Convenient Synthesis of (.+-.)-4-Prenylpterocarpin
Autor: | M. L. A. A. Vasconcellos, Jaime A. Rabi, Paulo R. R. Costa, Antonio L. Coelho, Alessandro B. C. Simas |
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Rok vydání: | 2010 |
Předmět: | |
Zdroj: | ChemInform. 24 |
ISSN: | 0931-7597 |
Popis: | Coupling of 7-methoxy-8-(3-methyl-2-butenyl)-2H-1-benzopyran (4 a) with 2-chloromercurio-4,5-methylenedioxyphenol (5) yields (±)-6 a,12 a-cis-dihydro-3-methoxy-4-(3-methyl-2-butenyl)-6H-[1,3] dioxolo[5,6]benzofuro[3,2-c][1]benzopyran (6; ±-4-prenylpterocarpin) in an efficient manner. An improved procedure for the preparation of chromenes is reported |
Databáze: | OpenAIRE |
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