AN IMPROVED METHOD FOR SYNTHESIS OF 1-BENZOPYRANS FROM UNSATURATED ALCOHOLS AND PHENOLS USING A CATALYTIC AMOUNT OF ACIDS.

Autor: Ishino, Yoshio, Mihara, Masatashi, Hayakawa, Noboru, Miyata, Tatsuya, Kaneko, Yoichi, Miyata, Toshiyuki
Předmět:
Zdroj: Synthetic Communications; 2001, Vol. 31 Issue 3, p439-448, 10p, 3 Charts
Abstrakt: 1-Benzopyrans, such as chromans and chromenes, were prepared in good to excellent yields by using a catalytic amount of p-toluenesulfonic acid through intermolecular cyclization reaction of phenols with unsaturated alcohols in 1,2-dichlroroethane. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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