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
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