Volume 48, Issue 22 pp. 3999-4001
Communication

Platinum(II)-Catalyzed Intramolecular Cyclization of o-Substituted Aryl Alkynes through sp3 CH Activation

Shangdong Yang

Shangdong Yang

Department of Chemistry, University of Chicago, 929 East 57th Street, Chicago, IL 60637 (USA), Fax: (+1) 773-702-0805, http://he-group.uchicago.edu/

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Zigang Li

Zigang Li

Department of Chemistry, University of Chicago, 929 East 57th Street, Chicago, IL 60637 (USA), Fax: (+1) 773-702-0805, http://he-group.uchicago.edu/

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Xing Jian

Xing Jian

Department of Chemistry, University of Chicago, 929 East 57th Street, Chicago, IL 60637 (USA), Fax: (+1) 773-702-0805, http://he-group.uchicago.edu/

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Chuan He Prof.

Chuan He Prof.

Department of Chemistry, University of Chicago, 929 East 57th Street, Chicago, IL 60637 (USA), Fax: (+1) 773-702-0805, http://he-group.uchicago.edu/

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First published: 12 May 2009
Citations: 133

This work was supported by the University of Chicago. We thank Dr. J. Halpern for the generous gift of Pt salts.

Graphical Abstract

Ring leader: PtCl2 catalyzes intramolecular cyclization of o-isopropyl or o-benzyl aryl alkynes to give substituted indene derivatives with good yields and high selectivity. This reaction appears to proceed through an sp3 CH activation and 1,4-hydrogen migration pathway (see scheme).

Abstract

Ring leader: PtCl2 catalyzes intramolecular cyclization of o-isopropyl or o-benzyl aryl alkynes to give substituted indene derivatives with good yields and high selectivity. This reaction appears to proceed through an sp3 CH activation and 1,4-hydrogen migration pathway (see scheme).

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