The Claisen condensation converts 2 molecules of an ester into a ?-keto ester. The reaction starts with the ester in an alkoxide/alcohol solution and is worked up with acid to form the neutral ?-keto ester product.
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The Claisen condensation converts 2 molecules of an ester into a ?-keto ester. The reaction starts...
The Claisen condensation converts 2 molecules of an ester into a B-keto ester. The reaction starts with the ester in an alkoxide/alcohol solution and is worked up with acid to form the neutral B-keto ester product. :0 O: 1. -OCH2CH3/CH3CH20H 2 2. H30 OH Show the curved-arrow mechanism for the Claisen condensation of ethyl ethanoate treated with ethoxide ion. Include all formal charges and nonbonding electrons. In each step, draw only the species that react in that step. If an...
The Claisen condensation converts 2 molecules of an ester into a ?-keto ester. The reaction starts with the ester in an alkoxide/alcohol solution and is worked up with acid to form the neutral ?-keto ester product. Step 3. Draw the ester-containing intermediate produced from step 2 and draw the next reactant or reagent, if applicable. Add curved arrows. Step 4. Draw the ester-containing intermediate produced from step 3 and draw the next reactant or reagent, if applicable. Add curved arrows....
The Claisen condensation converts 2 molecules of an ester into a β-keto ester. The reaction starts with the ester in an alkoxide/alcohol solution and is worked up with acid to form the neutral β-keto ester product.
BE Map. The Claisen condensation converts 2 molecules of an ester into a B-keto ester. The reaction starts with the ester in an alkoxide/alcohol solution and is worked up with acid to form the neutral B-keto ester product. Show the curved-arrow mechanism for the Claisen condensation of ethyl ethanoate treated with ethoxide ion. :0: :0: 1. -OCH2CH/CH3CH2OH 2 2. H30* Mechanism Tutorial Step 1a. Classify step Mechanism steps can be classified into a few key processes. Knowing these key processes...
Two questions about Claisen Condensation: 1) Why is Claisen Condensation not catalytic? 2) You form the beta-keto ester 2 times. Add acid at the last step to form the 2nd beta-keto ester. Why?
In its simplest form the Claisen condensation involves the enolate anion of an ester behaving as a nucleophile towards a neutral molecule of the same ester. Illustrate the mechanism of the reaction using ethyl acetate, CH3CO2CH2CH3, as the ester. [5 marks] (b) What base would you use in the reaction ? Explain your choice. [2 marks] Name and give the formula of a reagent that you could use to convert benzyl alcohol, C6H5CH2OH, into benzaldehyde, C6H5CHO. In the carbonyl group,...
The compound shown below is the product of a Claisen condensation. Draw structural formulas for the reactants: ester and enolate ion Assume all esters to be ethyl esters Do not include counter-ions, e.g., Na", I, in your answer Draw the enolate ion in its carbanion form Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner Separate multiple reactants using the sign from the drop-down menu P opy aste Next Previous
2. Consider the following esters. (a) Two of these esters are converted to B-keto esters in good yield on treatment with sodium ethoxide and subsequent acidification of the reaction mixture. Which two? Write the structure of the Claisen condensation product for each one. (2) (b) One ester is capable of being converted to a B-keto ester on treatment with sodium ethoxide, but the amount of B-keto ester that can be isolated after acidification of the reaction mixture is quite small....
PRE-LAB QUIZ for EXPERIMENT 27 Name 1. In Experiment 27, a modified Perkin reaction is performed. The Perkin reaction is a carbonyl condensation reaction that is related to the Claisen condensation and aldol condensation. In this experiment, the reactants are benzaldehyde and 3-benzoylpropionic acid with sodium acetate and acetic anhydride as catalysts. Draw the structures of these compounds in the space below. benzaldehyde 3-benzoylpropionic acid acetic anhydride 2. The first step of the reaction is the formation of the mixed...
Can you help me identify reagent (i), Compound 8 and Compound 12 in the reaction scheme? You have laboratory data on all the compounds in the synthesis, however the amount of data available to you varies. Some have the entirety of the spectral data, others have as little as the elemental analysis. Use the laboratory data to help you discover which reaction has been performed. The lab data for Compound 8 and 12 is as follows: You can use any...