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Michael addition with an olefinic pyridine: organometallic nucleophiles and carbon electrophiles.
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Abstract
The conjugate addition reactions of trans-1,2-di-(2-pyridyl)ethylene have been studied. This substrate reacts with organolithium nucleophiles and the resulting anionic intermediates may be trapped by proton or various carbonyl-based electrophiles. It is suggested that the dipyridyl structure stabilizes the intermediate carbanion, allowing the Michael adduct to be captured by an added electrophile.
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