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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 31, 2001 - Issue 3
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Original Articles

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

Yoshio Ishino Osaka Municipal Technical Research Institute, 1-6-50, Morinomiya, Joto-Ku, Osaka, 536-8553, Japan
,
Masatashi Mihara Osaka Municipal Technical Research Institute, 1-6-50, Morinomiya, Joto-Ku, Osaka, 536-8553, Japan
,
Noboru Hayakawa Osaka Municipal Technical Research Institute, 1-6-50, Morinomiya, Joto-Ku, Osaka, 536-8553, Japan
,
Tatsuya Miyata Osaka Municipal Technical Research Institute, 1-6-50, Morinomiya, Joto-Ku, Osaka, 536-8553, Japan
,
Yoichi Kaneko Osaka Municipal Technical Research Institute, 1-6-50, Morinomiya, Joto-Ku, Osaka, 536-8553, Japan
&
Toshiyuki Miyata Osaka Municipal Technical Research Institute, 1-6-50, Morinomiya, Joto-Ku, Osaka, 536-8553, Japan
Pages 439-448 | Received 17 Mar 2000, Published online: 09 Nov 2006
 
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Abstract

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.

Acknowledgments

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