4. Tertiary amines undergo reversible conjugate additions to a ß-unsaturated carbonyls. The reaction shown below uses this phenomenon followed by an aldol-like process to obtain the given product. Show a detailed mechanism for this reaction. The structure of one of the intermediates is shown below to assist in drawing the mechanism он о Ph Ph H20/E1OH Он О intermediate: Ph `NME3

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Q: -NH O2N

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Amines

Amines are organic compounds with a nitrogen atom having a lone pair of electrons on it. They are derived from ammonia (NH3) wherein hydrogen atoms are substituted by an aryl or alkyl group.