Volume 33, Issue 11 pp. 1276-1286
Full Paper

Synthesis and Acid-Catalyzed Cyclization of 2-Alkenylstilbenes: a New Approach to the Substituted Indenes

Wei Ding

Wei Ding

Department of Pharmaceutical Engineering, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China

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Xiaoxin Shi

Corresponding Author

Xiaoxin Shi

Department of Pharmaceutical Engineering, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China

Department of Pharmaceutical Engineering, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China, Tel.: 0086-021-64252052; Fax: 0086-021-64252052Search for more papers by this author
Xia Lu

Xia Lu

Department of Pharmaceutical Engineering, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China

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First published: 13 November 2015
Citations: 6

Abstract

A base-catalyzed ring-opening of 1-benzylisochromans 1 firstly produced 2-alkenylstilbenes 2, which then underwent a mild acid-catalyzed intramolecular cyclization to furnish 1,2-disubstituted indenes 3 in high yields. Subsequently, a base-catalyzed isomerization of the 1,2-disubstituted indenes 3 afforded the more stable 2,3-disubstituted indenes 4 in almost quantitative yields.

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