1. Which of the compounds listed below would produce
the following aldol condensation product?
2. Which is not a product of the claisen condensation
of ethyl ethanoate and ethyl butanoate?
3. A claisen-schmidt reaction shown below, is an
important step in the commercial synthesis of Vitamin A: what type
of reaction is the claisen- Schmidt?
4. Which of the following statements is true about the
anion formed from the reaction of diethyl malonate with sodium
ethoxide?
please help
Homework Answers
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1. Which of the compounds listed below would produce
the following aldol condensation product?
2. Which...
Question 1 Not yet answered Points out of 3.00 Consider two compounds shown below. For each compo...
Answer all questions please. Not due until April 3rd.
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Question 1 Not yet answered Points out of 3.00 Consider two compounds shown below. For each compound identify which group is the most acidic, the least acidic, or has mid acidity value (pKa value) он он 1 HO 0H3 Flag question NH3 OH 2 group 1 Choose... group 2 Choose group 3 Chse... group I group IIChoose group III Choose... Choose. Question 2 Not yet answered Points out of 3.00...
Choose the correct answer and explain why you choose that answer. -Page 2 4. The Claisen...
Choose the correct answer and explain why you choose that
answer.
-Page 2 4. The Claisen condensation produces which of these? a- An α-keto ester b.AB-keto ester C, A β-hydroxy ester d. A B-hydroxyaldehyde e. A B-di ketone 5. Which compound could be prepared using a Michael reaction? 0 0 o 1 CCH3 СОС2HS a. I d. IV e. v Part 2 t. The product (s) of the reaction of 2 mol of ethyl butanoate sodium ethoxide is(are) : b....
D Question 6 5p Compound 6, below is the product of which reaction: A mixed Aldol...
D Question 6 5p Compound 6, below is the product of which reaction: A mixed Aldol reaction between benzaldehyde and acetone O Amixed Aldol condensation between cyclohexanone and formaldehyde A mixed Aldol reaction between cyclohexanone and acetaldehyde A mixed Aldol condensation between cycloheptanone and formaldehyde
QUESTION 1 Which of the following will not undergo an aldol condensation reaction? butanal C 2-methylbutanal...
QUESTION 1 Which of the following will not undergo an aldol condensation reaction? butanal C 2-methylbutanal C 2,2-dimethylbutanal 3,3-dimethyl-2-butanone QUESTION 2 Which of the following constitutes a difference between an aldol and a Claisen condensation? basic conditions Ctetrahedral intermediate Cenolate ion formation protonation of the intermediate QUESTION 3 The product of an aldol condensation reaction is generally favored if Can unsymmetrical ketone and aldehyde are used Can unsymmetrical ester and ketone are used Cone of the carbonyl partners contains no...
Which of the following pairs of compounds would give the most successful crossed aldol condensation when...
Which of the following pairs of compounds would give the most successful crossed aldol condensation when combined in the presence of a strong base? (Note: by "successful" we mean that the reaction 1) actually works, and 2) gives only a single aldol condensation product.) Pair A: and Bu Ph H н Pair B: and Ph н н Pair C: and OMe Ph and Pair D: Pair C Pair A Pair D Pair B
#4 which of the following represent the final product of the below aldol condensation reaction ?...
#4 which of the following represent the final product of the
below aldol condensation reaction ? the IR of the product does not
have a broad peak around 3300 wavenumbers
Which intermediates are formed during the mechanism of the below reaction? Select all that apply. 2 й — ДА . с . CH_CH3 \ 2. То No ті о он g / H,с сну Нас сн, о - — -- H₃C CH₂ Question 2 2 pts In the above reaction,...
la) Consider the mixed aldol condensation reaction of 1-methylcyclopentane-1-carbaldehyde (shown below) and 3,3-dimethyl-2-butanone (shown below) in...
la) Consider the mixed aldol condensation reaction of 1-methylcyclopentane-1-carbaldehyde (shown below) and 3,3-dimethyl-2-butanone (shown below) in the presence of sodium hydroxide Provide the expected major MIXED aldol condensation product for this reaction (can exist as E or Z isomer so you can draw either) b) Would you have to heat the reaction mixture in order for the reaction to form the aldol condensation product? Why or wh y not? 2) Consider the mixed aldol condensation reaction of 3,3-dimethyl-2-butanone (shown in...
29. Which compounds will undergo decarboxylation upon heating? oll i la llo III IV A) I,...
29. Which compounds will undergo decarboxylation upon heating? oll i la llo III IV A) I, II B) II, III C) III, IV D) II, IV 30. What major product is formed when the following diketone undergoes aldol cyclization in base? Eto- EtOH uc de op We were unable to transcribe this image32. Which is the major product of the following series of reactions? Soci, OH OH OH i socl, roh, no. 1,0° , silor 'oi uviin 33. Which of...
Consider the following crossed aldol condensation. Which statement explains why a single cross condensation product is...
Consider the following crossed aldol condensation. Which statement explains why a single cross condensation product is formed? 2,2-dimethylcyclohexanone "CH₃ H₂C, CH, H NaOCH.CH H3C thanol benzaldehyde 2,2-Dimethylcyclohexanone has only one alpha carbon which can form an enolate. Benzaldehyde has no hydrogens attached to the alpha carbon which eliminates the self-condenstation reaction. 2,2-Dimethylcyclohexanone is sterically hindered which limits the self-condenstation reaction. All of the above
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....
Answer all questions please. Not due until April 3rd.
--------------------------------------------------------------------------------
Question 1 Not yet answered Points out of 3.00 Consider two compounds shown below. For each compound identify which group is the most acidic, the least acidic, or has mid acidity value (pKa value) он он 1 HO 0H3 Flag question NH3 OH 2 group 1 Choose... group 2 Choose group 3 Chse... group I group IIChoose group III Choose... Choose. Question 2 Not yet answered Points out of 3.00...
Choose the correct answer and explain why you choose that
answer.
-Page 2 4. The Claisen condensation produces which of these? a- An α-keto ester b.AB-keto ester C, A β-hydroxy ester d. A B-hydroxyaldehyde e. A B-di ketone 5. Which compound could be prepared using a Michael reaction? 0 0 o 1 CCH3 СОС2HS a. I d. IV e. v Part 2 t. The product (s) of the reaction of 2 mol of ethyl butanoate sodium ethoxide is(are) : b....
D Question 6 5p Compound 6, below is the product of which reaction: A mixed Aldol reaction between benzaldehyde and acetone O Amixed Aldol condensation between cyclohexanone and formaldehyde A mixed Aldol reaction between cyclohexanone and acetaldehyde A mixed Aldol condensation between cycloheptanone and formaldehyde
QUESTION 1 Which of the following will not undergo an aldol condensation reaction? butanal C 2-methylbutanal C 2,2-dimethylbutanal 3,3-dimethyl-2-butanone QUESTION 2 Which of the following constitutes a difference between an aldol and a Claisen condensation? basic conditions Ctetrahedral intermediate Cenolate ion formation protonation of the intermediate QUESTION 3 The product of an aldol condensation reaction is generally favored if Can unsymmetrical ketone and aldehyde are used Can unsymmetrical ester and ketone are used Cone of the carbonyl partners contains no...
Which of the following pairs of compounds would give the most successful crossed aldol condensation when combined in the presence of a strong base? (Note: by "successful" we mean that the reaction 1) actually works, and 2) gives only a single aldol condensation product.) Pair A: and Bu Ph H н Pair B: and Ph н н Pair C: and OMe Ph and Pair D: Pair C Pair A Pair D Pair B
#4 which of the following represent the final product of the
below aldol condensation reaction ? the IR of the product does not
have a broad peak around 3300 wavenumbers
Which intermediates are formed during the mechanism of the below reaction? Select all that apply. 2 й — ДА . с . CH_CH3 \ 2. То No ті о он g / H,с сну Нас сн, о - — -- H₃C CH₂ Question 2 2 pts In the above reaction,...
la) Consider the mixed aldol condensation reaction of 1-methylcyclopentane-1-carbaldehyde (shown below) and 3,3-dimethyl-2-butanone (shown below) in the presence of sodium hydroxide Provide the expected major MIXED aldol condensation product for this reaction (can exist as E or Z isomer so you can draw either) b) Would you have to heat the reaction mixture in order for the reaction to form the aldol condensation product? Why or wh y not? 2) Consider the mixed aldol condensation reaction of 3,3-dimethyl-2-butanone (shown in...
29. Which compounds will undergo decarboxylation upon heating? oll i la llo III IV A) I, II B) II, III C) III, IV D) II, IV 30. What major product is formed when the following diketone undergoes aldol cyclization in base? Eto- EtOH uc de op We were unable to transcribe this image32. Which is the major product of the following series of reactions? Soci, OH OH OH i socl, roh, no. 1,0° , silor 'oi uviin 33. Which of...
Consider the following crossed aldol condensation. Which statement explains why a single cross condensation product is formed? 2,2-dimethylcyclohexanone "CH₃ H₂C, CH, H NaOCH.CH H3C thanol benzaldehyde 2,2-Dimethylcyclohexanone has only one alpha carbon which can form an enolate. Benzaldehyde has no hydrogens attached to the alpha carbon which eliminates the self-condenstation reaction. 2,2-Dimethylcyclohexanone is sterically hindered which limits the self-condenstation reaction. All of the above
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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