Organic letters

rhodium-catalyzed intramolecular [4+ 2] cycloadditions of alkynyl halides

WJ Yoo, A Allen, K Villeneuve, W Tam

Index: Yoo, Woo-Jin; Allen, Anna; Villeneuve, Karine; Tam, William Organic Letters, 2005 , vol. 7, # 26 p. 5853 - 5856

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Citation Number: 38

Abstract

Cationic rhodium (I)-catalyzed intramolecular [4+ 2] cycloadditions of diene-tethered alkynyl halides were found to occur in good yields (70-87%). The halide moiety is compatible with the cycloaddition reactions, and no oxidative insertion to the alkynyl halide was observed. The halogen-containing cycloadducts could be transformed into a variety of products that are difficult or impossible to obtain via direct cycloaddition.

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