1. Some of the following compounds can be formed by aldol reactions. Identify these compounds and...
3) The following compounds can be made by either an Aldol or a Claisen condensation. In each case, indicate whether the product is as result of an Aldol or a Claisen condensation AND then draw the appropriate starting material(s) that would be used to form the product. OEt (B) (D) O Et
Show the products for the following reactions. Propose starting materials that can form the following product in one step. NaOH, Br2 d. PCls. Br2 он e. 4. Propose starting materials that can form the following product in one step Compound Z Synthesize the starting materials you proposed above from Ethanal and ethyl acetate (do not use other carbonyl compounds). You can use ethanal and ethyl acetate as many times as you need to. Hint: you will use the 3 carbon-carbon...
Identify the reagents that can be used to produce each of the following compounds via an aldol reaction. Show mechanisms and charges.
10. Please Check 1 by 1 and read carefully. I would need a perfect score for this . Thanks Select the keyword or phrase that will best complete each sentence A Claisen reaction is a nucleophilic substitution in which an enolate is the nucleophile Key terms: Robinson annulation Aldol condensation: An aldol reaction in which the initially formed p hydroxyl carbonyl compound loses water by dehydration. Claisen reaction Aldol condensation Dieckmann reaction: An intramolecular Claisen reaction of a diester to...
5. Give the products for the following aldol reactions.6. Cinnamaldehyde can be synthesized by a mixed aldol condensation reaction. Show the starting materials you would use and write out the reaction mechanism.
Problem 2. Provide the structures of the starting materials necessary to form the following compounds via an aldol condensation, Claisen condensation, or Wittig reaction. Use each reaction once, and indicate which reaction you are proposing. For some reactions, there may be multiple correct answers (provide only one).
how to approach these reactions? 08. The following molecules can be formed by either: Michael Reaction; Enamine Acylation; Acetoacetic Ester Synthesis; Michael Addition; Malonic Ester Synthesis; Robinson Annulation; Aldol Condensation; Claisen Condensation; Intramolecular Aldol Condensation; Dieckmann Condensation or a Combination of two of the above listed reaction. In each case write the proper of the reaction on the line and dissect the product into appropriate starting material. In some cases there might only be one starting material. You may use...
1. Draw the aldol product formed from an aldol/Claisen reaction with the given starting material(s) using OH or RO in H20 or ROH. (Hint: the product of an aldol reaction is a B-hydroxy carbonyl compound or an a,b- unsaturated carbonyl compound. The a,ß-unsaturated carbonyl will be the major product unless elimination of H2O cannot form the conjugated system.) он Но, но Н,0 НО. ОН НО. он H, H НО. НО.
5) Why is the Aldol reaction often called an Aldol condensation? A) The initially formed b-hydroxy carbonyl compound loses water B) The initially formed b-hydroxy carbonvl compound loses an oxygen atom. C) The initially formed b-hydroxy carbonyl compound loses a hydrogen atom D) The initially formed b-hydroxy carbonyl compound loses a hydroxyl group. 6) When is a crossed Aldol reaction said to be synthetically useful? A) When both carbonyl compounds have a hydrogens B) When one carbonyl compound has no...
For the following crossed aldol reactions, provide the product 2. For the following crossed aldol reactions, provide the product. (15 pts) 2. LDA 2. Me MeMe Me Me 3.H+ 1. LDA 2. Me Me 3. H+ 1. LDA 2. MeH 3. H+ 1. LDA H Me Me Me 3. H+ 1. LDA “ и Me Me H Me 3. H+