Synthesis of trans-p-Anisalacetophenone

Synthesis of trans-p-Anisalacetophenone - Synthesis of

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Synthesis of trans-p- Anisalacetophenone Introduction: The purpose of this experiment is to understand and properly execute the synthesis of an α, β unsaturated carbonyl compound by a crossed aldol condensation. Main Reaction: Procedure: As we began today’s experiment, we obtained 1.0 ml of p- Anisaldehyde and mixed it with 1.0 ml of acetophenone in a test tube, and then to this solution we added 3.00 mL of 96% ethanol solution. We stirred the contents of the test tube to dissolve the reactants. We then transferred 5 drops of 50% sodium hydroxide into the ethanol solution. We observed that the solution turned a yellowish color. The formed aldol dehydrates in the presence of NaOH results in the extended conjugation system with the aromatic ring and the carbonyl group, thus forming the condensation product of trans-p- anisalacetophenone. In order to help this occur, we vigorously shook the test tube and then let it stand for 15 minutes. We observed gas bubbles began to emulsify and rise to the surface of the solution. The solution gradually went from clear to become a thick and
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This note was uploaded on 08/02/2010 for the course CHEM 2080 taught by Professor Davis,f during the Fall '07 term at Cornell.

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Synthesis of trans-p-Anisalacetophenone - Synthesis of

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