A new and efficient general method for the synthesis of 2-spirobenzopyrans: First synthesis of cyclic analogues of precocene I and related compounds
Autor: | S. Y. Dike, Niteen Y. Sapre, J. R. Merchant |
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Rok vydání: | 1991 |
Předmět: | |
Zdroj: | Tetrahedron. 47:4775-4786 |
ISSN: | 0040-4020 |
Popis: | A new synthesis of spirobenzopyran has been accomplished by Friedel- Crafts reaction of various m-dihydroxybenzenes and cycloalkylidene acetic acid in the presence of a Lewis acid. Starting from cycloalkylidene acetic acid novel synthesis of 2-spiro-benzopyrans has been accomplished. |
Databáze: | OpenAIRE |
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