Chapter 23: Q3P (page 759)
What enone product would you expect from aldol condensation of each of the following compounds?
Short Answer
ENONEcontains unsaturated carbonyl compound having alkene which is conjugated to ketone in the same compound.
Chapter 23: Q3P (page 759)
What enone product would you expect from aldol condensation of each of the following compounds?
ENONEcontains unsaturated carbonyl compound having alkene which is conjugated to ketone in the same compound.
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Get started for freeThe major product formed by intramolecular aldol cyclization of 2,5-heptanedione (Problem 23-51) has two singlet absorptions in the 1H NMR spectrum, at 1.65 d and 1.90 d, and has no absorptions in the range 3 to 10 d. What is its structure?
What condensation products would you expect to obtain by treatment of the following substances with sodium ethoxide in ethanol?
(a)Ethyl butanoate
(b)Cycloheptanone
(c)3,7-Nonanedione
(d)3-Phenylpropanal
What product would you expect from the following mixed Claisen-like reaction?
How could you prepare the following cyclohexanones by combining a Stork enamine reaction with an intramolecular aldol condensation? (See Problem 23-64.)
How would you prepare the following compound using a Robinson annulation reaction between a𝛃-diketone and an𝛂,𝛃 -unsaturated ketone? Draw the structures of both reactants and the intermediate Michael addition product
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