The Claisen condensation converts two 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. 1. "OCH,CH3/ CH3CH2OH 2. H3O* 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 enolate resonance form is possible, draw only the carbanionic form. If a CHx group is being deprotonated, draw all H's on the reacting site. Tip: always omit ethanol byproducts. Step 1c: Draw the structure(s) resulting from the curved arrow mechanism of step 1. Include formal charges and all hydrogen atoms, but do not include lone pairs. Draw the structure(s) indicated by the curved-arrow mechanism. H,C CH3 H,C CH, Incorrect
The Claisen condensation converts two 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. 1. "OCH,CH3/ CH3CH2OH 2. H3O* 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 enolate resonance form is possible, draw only the carbanionic form. If a CHx group is being deprotonated, draw all H's on the reacting site. Tip: always omit ethanol byproducts. Step 1c: Draw the structure(s) resulting from the curved arrow mechanism of step 1. Include formal charges and all hydrogen atoms, but do not include lone pairs. Draw the structure(s) indicated by the curved-arrow mechanism. H,C CH3 H,C CH, Incorrect
Organic Chemistry
8th Edition
ISBN:9781305580350
Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Chapter16: Aldehydes And Ketones
Section: Chapter Questions
Problem 16.26P: Wittig reactions with the following -chloroethers can be used for the synthesis of aldehydes and...
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Step 1c: Draw the structure(s) resulting from the curved arrow mechanism of step 1. Include formal charges and all hydrogen atoms, but do not include lone pairs.
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