The Claisen condensation converts 2 molecules of an ester into a β-keto ester. The reaction starts...
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.
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The Claisen condensation converts 2 molecules of an ester into a
β-keto ester. The reaction starts...
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
?-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.
Please show what goes in each box!! What I put shown below are
all incorrect.
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...
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
?-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....
BE Map. The Claisen condensation converts 2 molecules of an ester into a B-keto ester. The...
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...
The Claisen condensation converts 2 molecules of an ester into a B-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...
Two questions about Claisen Condensation: 1) Why is Claisen Condensation not catalytic? 2) You form the...
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...
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,...
5.) 5 the goldd reach Section 2 Pro 32. A B-keto ester is a product in...
5.) 5 the goldd reach Section 2 Pro 32. A B-keto ester is a product in which of the following reactions? A) Aldol condensation B) Claisen condensation C) Dieckmann condensation D) Robinson annulation E) Michael addition Section 17-13 33. An a,ß-unsaturated ketone is a product in which of the following reactions? A) Aldol condensation B) Claisen condensation C) Diekmann condensation D) Robinson annulation E) Michael addition Section 17-11 addition when mixed with base?
6. Give all possible structures of the product (C20H1203) formed by intramolecular Claisen condensation of the...
6. Give all possible structures of the product (C20H1203) formed by intramolecular Claisen condensation of the keto-ester shown below. 1. NaOH 2. H,0
Fill in the blanks. The base to form the enolate of the ester in a Claisen condensation must match the __________ side of the ester because of NaOH is used, _______________ occurs instead of enolate formation.
Fill in the blanks. The base to form the enolate of the ester in a Claisen condensation must match the __________ side of the ester because of NaOH is used, _______________ occurs instead of enolate formation.I think the first answer is alcohol? I'm not sure about that and what the answer is for the 2nd blank.
2. Consider the following esters. (a) Two of these esters are converted to B-keto esters in...
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....
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.
Please show what goes in each box!! What I put shown below are
all incorrect.
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...
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....
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...
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...
5.) 5 the goldd reach Section 2 Pro 32. A B-keto ester is a product in which of the following reactions? A) Aldol condensation B) Claisen condensation C) Dieckmann condensation D) Robinson annulation E) Michael addition Section 17-13 33. An a,ß-unsaturated ketone is a product in which of the following reactions? A) Aldol condensation B) Claisen condensation C) Diekmann condensation D) Robinson annulation E) Michael addition Section 17-11 addition when mixed with base?
6. Give all possible structures of the product (C20H1203) formed by intramolecular Claisen condensation of the keto-ester shown below. 1. NaOH 2. H,0
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....
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