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A: The reaction given is aldol reaction.
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A: The solution of the question is given below:
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Q: Draw the step-by-step mechanisms for the following reactions: a) Step 1 of the aldol condensation OH…
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Q: Draw the product formed in each directed aldol reaction. [1] LDA OEt [2] [1] LDA CH CH, (2)…
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A: The product of the intermolecular Aldol condensation is as follows.
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Q: What aldehyde or ketone is needed to prepare each compound by an aldol reaction?
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Q: b) Step 2 of the aldol condensation OH NaOEt, ETOH H.
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Q: 1. Why is aldol product the major product in relation to the Cannizzaro reaction?
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Q: What aldehyde or ketone is needed to prepare each compound by an aldol reaction?
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- Using cyclopentanone as the reactant, show the product of a. acid-catalyzed keto–enol interconversion. b. an aldol addition. c. an aldol condensation.Give the reaction mechanism for the following: a. Aldol condensation b. Claisen condensation c. Dehydration of aldol i. in basic medium ii. in acidic mediumSelect the di-carbonyl compound that would efficiently form the structure shown via an intramolecular Aldol reaction. A. or B. •oo •ay E. og F. ol
- Provide the reactant(s) that would give the following possible aldol condensation product. A. H B. H enlig Si E. C. D. OH OIn an aldol condensation where cyclopentanone reacts 1:1 with Ortho- methoxybenzaldehyde. How many signals would appear in an HNMR for the condensation product? а. 9. o b. 7 С. 10 d. 11 O . 8Define Intramolecular Aldol Reactions ?
- A 4. What is the major product of the following intramolecular aldol condensation reaction? NaOH H20 (dehydration) A C D 3Convert each compound to its enol or keto tautomer. i CH3 CH3 Draw the aldol product formed from each compound. CH,CHO a. a. a. CHO b. b. b. (CH3)3CCH,CHO OH Which carbonyl compounds do not undergo an aldol reaction when treated with "OH in H₂O? C. (CH3)3C An ortho ester C. i i CH3 CH3 d. d. Draw the products formed in each crossed aldol reaction. a. CH,CH,CH,CHO and CHz=0 C. CH₂CHO and b. CH₂COCH3 and CH₂=O (CH3)3C CH3 e. Problem 19.12 How do you account for the following differences in ease of hydrolysis? (a) RC(OR), » RCH(OR')₂ » RCH₂OR' An acetal An ether CHO (b) R₂C(OR)₂ > RCH(OR')₂ > H₂C(OR')2A compound known as Hagemann’s ester can be prepared by treating a mixture of formaldehyde and ethyl acetoacetate first with base and then with acid and heat. Write the structure for the product of each of the steps.a. The first step is an aldol-like condensation.b. The second step is a Michael addition.c. The third step is an intramolecular aldol addition.d. The final transformation includes a dehydration and a hydrolysis followed by a decarboxylation.
- What is the first step in a base catalyzed aldol reaction? A. Protonation of Carbonyl group B. Elimination of Carbonyl with an alkene C. Formation of an Enolate D. Elimination of hydroxide E. Addition of nucleophile to R2C=O20. Provide the reactants and reaction conditions necessary for the following transformations. Stereochemistry and regiochemistry may be important. a. b. C. d. type: Oxidative cleavage type: Fisher esterification type: Acetal formation type: Aldol condensation TSOH OH + CO2 + H2O & volon1.What is the best reagent to complete this synthesis? OA 1)???? CN 7.) NaCN.