Homework Answers
6)From the following compounds option 3 and 4 can be synthesized from acetoacetic ester
7) The acidic order depend on the stability of conjugate base . Stable conjugate base more acidic .So most acidic will be trifluroacetic acid next trichloro acetic acid
So order will be 2 >1 >4 >3
8) Numbering will be from functional group
So IUPAC name will be 2- Ethylpentatonic acid
9) This is an example of Grignard reaction in which Ethyl group will attack on the carbony carbon and then OMe group will remove
So option B is correct
10) LiAlD4 is a reducing agent which reduced cyclic ester to alcohol
So option A will be correct
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Question 6 (1 point) Which of the following can be prepared by acetoacetic ester synthesis? CO,...
The acetoacetic ester synthesis is a carbonyl alkylation reaction. It is used to prepare methyl ketones...
The acetoacetic ester synthesis is a carbonyl alkylation reaction. It is used to prepare methyl ketones from primary alkyl halides, lengthening the carbon chain by three atoms. Thus, the product can be visualized as being a "substituted acetone." The reaction consists of three steps: generation of the enolate anion followed by S2 reaction with a primary alkyl halide, ester hydrolysis under acid conditions, and decarboxylation. 1. NaOEt 2. H2O* 3. heat Br + - H₃C + CO2 + ETOH Hc...
Question 16 (1 point) Saved What is the IUPAC name for this compound? CO2H CH3CH2CHCH,CH,CH; O3-Hexylcarboxylic...
Question 16 (1 point) Saved What is the IUPAC name for this compound? CO2H CH3CH2CHCH,CH,CH; O3-Hexylcarboxylic acid O2-Ethyl-2-propyl-acetic acid 02-Propylbutanoic acid O2-Ethylpentanoic acid
Question 26 (1 point) Saved Which best describes this transformation? Meo, CO Me Et Et NaoMe...
Question 26 (1 point) Saved Which best describes this transformation? Meo, CO Me Et Et NaoMe (2 equivalents) MeOH + H2NNH2 HNNH O 2 intermolecular nucleophilic acyl substitutions An intermolecular followed by intramolecular nucleophilic acyl substitutions O 2 intramolecular nucleophilic acyl substitutions O An intramolecular followed by intermolecular nucleophilic acyl substitutions Question 27 (1 point) What is the product of this reaction sequence? 1. NaOEt 2. BrCH_CH_CH_Br (0.5 molar equivalent) 3. NaOEt 4 H30*, Heat CH(COCH2CH3)2 -COH HOO.COM C.com HOC...
Question 2 (1 point) Saved Which set of hydrogen atoms will undergo deuterium exchange with MeOD...
Question 2 (1 point) Saved Which set of hydrogen atoms will undergo deuterium exchange with MeOD in the presence of MeONa? 1 2 1 and 2 only O2 and 3 only O 2 only O 3 only Which would be a reasonable intermediate for the this reaction? H30* PhoMe Ph-Me Ph Ome PhẩOMe OH PhẩOMe + OH OH + H2 Question 4 (1 point) Which hydrogen is most acidic? ace OD Question 5 (1 point) What is the product of...
18 Question (3 points) Draw the three requested missing structures for this acetoacetic ester synthesis. Just...
18 Question (3 points) Draw the three requested missing structures for this acetoacetic ester synthesis. Just draw the main organic product of each step-leave out any byproducts 1. NaOEt, EtOH 2. PhCH2Br 3. NaOEt, EtOH 4. CHal 5. NaOH, H2O 6. H30", heat 1st attempt Part 1 (1 point) al See Periodic Table See Hint Draw the product after Step 2:
Design a synthesis of ethyl 2-ethyl-3-oxohexanoate from alcohols containing 4 carbons or fewer. points COET alcohols...
Design a synthesis of ethyl 2-ethyl-3-oxohexanoate from alcohols containing 4 carbons or fewer. points COET alcohols containing 4 carbons or fewer Part 1 out of 9 Choose the best option for the precursor to the target molecule. Part 2 out of 9 19 Choose the best option for the carboxylic acid precursor to the intermediate ethyl butanoate. points TOET OET carboxylic acid alcohol oị © © carboxylic acid alcohol points ОН он о носH,CH, но Design a synthesis of ethyl...
Question 1 (1 point) Which of the following statements about acids is NOT true? a) An...
Question 1 (1 point) Which of the following statements about acids is NOT true? a) An acid increases the concentration of hydronium in solution. b) An acid is a proton donor. c) An example of an acid is HBr. d) An acid increases the concentration of protons in solution. e) An acid increases the concentration of hydroxide in solution. Question 2 (1 point) Which of the following changes in blood pH would you expect to observe in a hyperventilating patient,...
Propose a stepwise mechanism for the following reaction of a B-keto ester. Suggest a reason why...
Propose a stepwise mechanism for the following reaction of a B-keto ester. Suggest a reason why this rearrangement reaction occurs. [1] NaOET EtOH [2] H2O* Step [1]: 00: OET OS OCH CH O OH OCHCH CO2CH.CH v DE :0: LOE :: CO.CHCH OCH CH HOCH.CH Step (2]: OE CO_CHCH SH OEt :O: OCH CH3 :: OE: 70: : Et CO2CH2CH3 OCH₂CH₂ Step (3): Et0 :0 OE :0: 19:0: 1 OCH CH O OCH CH3 :0 OE 0 O: Et:0 CO.CH.CH...
Question 14 (1 point) For the following chemical equation/reaction, hydroxide (OH") is functioning as the: Н,0...
Question 14 (1 point) For the following chemical equation/reaction, hydroxide (OH") is functioning as the: Н,0 + OH OH butyrate O conjugate acid conjugate base acid base atv A Aa MacBook Air SO ET 888 OM $ 4 3 & 7 5 6 8 9 E R T Y U 0 P D F G H J к < > C V B N. M
9. Which of the following amines can be prepared by ring opening of an epoxide with...
9. Which of the following amines can be prepared by ring opening of an epoxide with sodium amide followed by reduction? CH OH Em Em a. only 1 b. only 1 and 2 c. only 1 and 4 d. 1, 2, 3 and 4 10. What is the IUPAC name of the following compound? OH HO. Y OH ÕH a. (2R 3R)-dihydroxybutanedioic acid b. (2S,3S)-dihydroxybutanedioic acid C. (2R,3S)-dihydroxybutanedioic acid d. (2S,3R)-dihydroxybutanedioic acid 11. Which of the following is the correct...
The acetoacetic ester synthesis is a carbonyl alkylation reaction. It is used to prepare methyl ketones from primary alkyl halides, lengthening the carbon chain by three atoms. Thus, the product can be visualized as being a "substituted acetone." The reaction consists of three steps: generation of the enolate anion followed by S2 reaction with a primary alkyl halide, ester hydrolysis under acid conditions, and decarboxylation. 1. NaOEt 2. H2O* 3. heat Br + - H₃C + CO2 + ETOH Hc...
Question 16 (1 point) Saved What is the IUPAC name for this compound? CO2H CH3CH2CHCH,CH,CH; O3-Hexylcarboxylic acid O2-Ethyl-2-propyl-acetic acid 02-Propylbutanoic acid O2-Ethylpentanoic acid
Question 26 (1 point) Saved Which best describes this transformation? Meo, CO Me Et Et NaoMe (2 equivalents) MeOH + H2NNH2 HNNH O 2 intermolecular nucleophilic acyl substitutions An intermolecular followed by intramolecular nucleophilic acyl substitutions O 2 intramolecular nucleophilic acyl substitutions O An intramolecular followed by intermolecular nucleophilic acyl substitutions Question 27 (1 point) What is the product of this reaction sequence? 1. NaOEt 2. BrCH_CH_CH_Br (0.5 molar equivalent) 3. NaOEt 4 H30*, Heat CH(COCH2CH3)2 -COH HOO.COM C.com HOC...
Question 2 (1 point) Saved Which set of hydrogen atoms will undergo deuterium exchange with MeOD in the presence of MeONa? 1 2 1 and 2 only O2 and 3 only O 2 only O 3 only Which would be a reasonable intermediate for the this reaction? H30* PhoMe Ph-Me Ph Ome PhẩOMe OH PhẩOMe + OH OH + H2 Question 4 (1 point) Which hydrogen is most acidic? ace OD Question 5 (1 point) What is the product of...
18 Question (3 points) Draw the three requested missing structures for this acetoacetic ester synthesis. Just draw the main organic product of each step-leave out any byproducts 1. NaOEt, EtOH 2. PhCH2Br 3. NaOEt, EtOH 4. CHal 5. NaOH, H2O 6. H30", heat 1st attempt Part 1 (1 point) al See Periodic Table See Hint Draw the product after Step 2:
Design a synthesis of ethyl 2-ethyl-3-oxohexanoate from alcohols containing 4 carbons or fewer. points COET alcohols containing 4 carbons or fewer Part 1 out of 9 Choose the best option for the precursor to the target molecule. Part 2 out of 9 19 Choose the best option for the carboxylic acid precursor to the intermediate ethyl butanoate. points TOET OET carboxylic acid alcohol oị © © carboxylic acid alcohol points ОН он о носH,CH, но Design a synthesis of ethyl...
Question 1 (1 point) Which of the following statements about acids is NOT true? a) An acid increases the concentration of hydronium in solution. b) An acid is a proton donor. c) An example of an acid is HBr. d) An acid increases the concentration of protons in solution. e) An acid increases the concentration of hydroxide in solution. Question 2 (1 point) Which of the following changes in blood pH would you expect to observe in a hyperventilating patient,...
Propose a stepwise mechanism for the following reaction of a B-keto ester. Suggest a reason why this rearrangement reaction occurs. [1] NaOET EtOH [2] H2O* Step [1]: 00: OET OS OCH CH O OH OCHCH CO2CH.CH v DE :0: LOE :: CO.CHCH OCH CH HOCH.CH Step (2]: OE CO_CHCH SH OEt :O: OCH CH3 :: OE: 70: : Et CO2CH2CH3 OCH₂CH₂ Step (3): Et0 :0 OE :0: 19:0: 1 OCH CH O OCH CH3 :0 OE 0 O: Et:0 CO.CH.CH...
Question 14 (1 point) For the following chemical equation/reaction, hydroxide (OH") is functioning as the: Н,0 + OH OH butyrate O conjugate acid conjugate base acid base atv A Aa MacBook Air SO ET 888 OM $ 4 3 & 7 5 6 8 9 E R T Y U 0 P D F G H J к < > C V B N. M
9. Which of the following amines can be prepared by ring opening of an epoxide with sodium amide followed by reduction? CH OH Em Em a. only 1 b. only 1 and 2 c. only 1 and 4 d. 1, 2, 3 and 4 10. What is the IUPAC name of the following compound? OH HO. Y OH ÕH a. (2R 3R)-dihydroxybutanedioic acid b. (2S,3S)-dihydroxybutanedioic acid C. (2R,3S)-dihydroxybutanedioic acid d. (2S,3R)-dihydroxybutanedioic acid 11. Which of the following is the correct...
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