for the theroretical yield is the mol correct? also using the aldol condensation reaction in this portion are we using the aldol condensation reaction to synthesize acetophenone and para-methybenzaldehye. acetophenone 0.5 g, 4.2 mmol Para-methylbenzaldehyde 0.5 g, 4.2 mmol NaOH=0.18g = 4.5 mol Theroretical yield=0.93g =0.0519 mol Percent yield=76.8% Actual yield= 0.715 g Melting point observered= 93 degree Celsius Expected melting point =93-94.5 degree Celsius

for the theroretical yield is the mol correct? also using the aldol condensation reaction in this portion are we using the aldol condensation reaction to synthesize acetophenone and para-methybenzaldehye. acetophenone 0.5 g, 4.2 mmol Para-methylbenzaldehyde 0.5 g, 4.2 mmol NaOH=0.18g = 4.5 mol Theroretical yield=0.93g =0.0519 mol Percent yield=76.8% Actual yield= 0.715 g Melting point observered= 93 degree Celsius Expected melting point =93-94.5 degree Celsius

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter26: Aldol And Claisen Reactions

Section: Chapter Questions

Problem 5E

See similar textbooks

Similar questions

Calculate theoretical yield of 1 (0.25 g) acetone and 2 (1.0 ml) benzaldehyde in a mixed aldol condensation reaction producing 1 dibenzalacetone (enone) + 2 H2O.
In your investigations into the synthesis of condensation product B (aldol reaction), did temperature play any role in the outcome? Give a few words of explanation for why this might be. Aldehydes : Benzaldehyde, 2,2-Dimethyl-pentan-3-one Bases: KOH or LDA Solvents: Ethanol, Ether Reactions: Benzaldehyde + 2,2-Dimethyl-pentan-3-one + Ethanol + KOH or LDA Benzaldehyde 2,2-Dimethyl-pentan-3-one + Ether + KOH or LDA
In a mixed aldol condensation with unknown aldehydes and ketones experiment, some aldol condensation reactions need to be heated for the dehydration step to occur. Explain why that was not necessary for the reactions carried out in this experiment? [Hint: what makes the product especially stable?]. This experiment used ethanol, acetic acid, sodium hydroxide, cyclohexanone and 4- methoxybenzaldehyde.
Show the detailed reaction mechanism (symmetrical aldol condensation) of propanal to 2-methyl-2-pentanal for meprobamate. Solvent used is methanol.
Hand writing please. In the aldol condensation reaction, you mixed 1,3-diphenylacetone with Benzil and then added the base to initiate the condensation reaction. In addition to the tetraphenylcyclopentadienone, what other organic product (it's an enone) would be formed if you mixed the 1,3-diphenylacetone with base and then added the Benzil?
1. Discuss the role of the Aldol condensation reaction in the synthesis below. What specific reaction was used in the synthesis? What is the importance of the aldol reaction in the entire synthetic approach? 2. Show the detailed reaction mechanism involved in their corresponding specific parts in this syntheses.
Self-condensation of acetone is a possible side reaction for the aldol condensation(Reaction 1). Draw the structure of this side product. How is this side reaction minimizedin our procedure written below? Reaction 1 - Experimental Procedure: In a clean, small Erlenmeyer flask, combine your unknownaromatic aldehyde (350 μL (400 mg if it is a solid)), 95% ethanol (2.0 mL), and 5 N aqueoussodium hydroxide (0.6 mL). Swirl to mix, and then add acetone (100 μL). Stir/swirl vigorously for30 minutes, until precipitation is complete. If no precipitate forms after 15 minutes, heat theErlenmeyer flask gently in on the sand bath in the hood for 15 minutes, and then allow it to coolto room temperature. Whether heated or not, cool your Erlenmeyer flask in an ice bath for 10minutes to ensure complete crystallization. Collect the product by vacuum filtration. (If you donot have any solid at this point, evaporate all solvent in the sand bath. Recrystallize if solidresidue is obtained; otherwise stop…
Aldol Condensation- Synthesis of Dibenzalacetone The protocol says that, after adding in all the reactants, stir for an additional 15 minutes. A student swirled for only 8 minutes and then, correctly, stopped and proceeded with isolating the product. What did the student do that gave such confidence and accuracy?
This experiment is aldol condensation reaction. Complete the table
Give an example of a proline-catalyzed direct asymmetric aldol reaction
In an aldol condensation reaction where dibenzyl ketone is used to produce Tetraphenylcyclopentadienone, the conditions are changed. Suppose instead of using dibenzyl ketone (1,3-diphenyl-2-propanone) we used benzophenone (diphenylmethanone). Would this reaction work? Why or why not? Hint: Does α-carbon to carbonyl group has hydrogen?
Draw the arrow pushing mechanism for the Aldol condensation converting vanillin to dehydrozingerone. ( be specific use vanillin and acetone and show its conversion to dehydrozingerone not just some general aldol condensation.)