Volume 91 Issue 34 | p. 24 | Concentrates
Issue Date: August 26, 2013

Crystal Structure Of A Cuprate-Carbonyl π-Complex

Data for long-predicted intermediate in copper catalysis could aid synthetic method design
Department: Science & Technology
News Channels: JACS In C&EN, Analytical SCENE, Organic SCENE
Keywords: organometallic, copper, pi bond, cuprate-carbonyl

Bonding between a copper ion and the π-orbitals of a double bond, C=O in this case, has been observed by X-ray crystallography for the first time. Such three-center bonds have been proposed as intermediates in a number of important copper-catalyzed reactions, including additions using Gilman reagents (R2CuLi). The arrangement is unstable, and until recently, researchers have only been able to infer the intermediate’s existence. In June, . . .

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