Synlett 2003(4): 0573-0575
DOI: 10.1055/s-2003-37532
LETTER
© Georg Thieme Verlag Stuttgart · New York

Iridium Complex-Catalyzed Pauson-Khand-Type Reaction of Allenynes

Takanori Shibata*, Sho Kadowaki, Masaya Hirase, Kentaro Takagi
Department of Chemistry, Faculty of Science, Okayama University, Tsushima, Okayama 700-8530, Japan
e-Mail: tshibata@cc.okayama-u.ac.jp;
Further Information

Publication History

Received 25 December 2002
Publication Date:
26 February 2003 (online)

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Abstract

Vaska’s complex [IrCl(CO)(PPh3)2] efficiently catalyzes the intramolecular carbonylative [2+2+1] cycloaddition of allenynes. A dimethyl substituent on the allene terminus and a low partial pressure of carbon monoxide realize the selective engagement of the internal π-bond of allene.