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10. Select the compound that can not be made using the malonic ester synthesis: O O...
11. In general both the malonic ester and acetoacetate synthesis require the addition of dilute acid...
11. In general both the malonic ester and acetoacetate synthesis require the addition of dilute acid in order to generate the final product. Why? A the alkoxy cation needs to be eliminated C. the ionized cation partitions to the aqueous layer B. the stabilized enolate adds a proton in the separatory funnel D. this generates heat leading to decarboxylation 0 12. Select the proper sequence of reactions needed to produce the desired final product: ? A. NaoMe, Mel/NaOMe, allyl-Br /...
1) Which product will be created by these reactions: i ) je te si are Å...
1) Which product will be created by these reactions: i ) je te si are Å Br Br Br2 مل Br Br Br AcОН A. B. C. D. ii) z B. D. 2) Which of these compounds cannot be made using malonic ester synthesis? O OH Meo OME OH Ph ОН A. B. Ph C. D. 3) Why do malonic ester and acetoacetate synthesis require diluted acid to generate the final product? C. the ionized cation partitions to the aqueous...
10. Select the compound that can not be made using the malonic ester synthesis: O o...
10. Select the compound that can not be made using the malonic ester synthesis: O o O OH MeO OMe OH Ph ОН A. B. Ph C. D. 11. In general both the malonic ester and acetoacetate synthesis require the addition of dilute acid in order to generate the final product. Why? A. the alkoxy cation needs to be eliminated C. the ionized cation partitions to the aqueous layer B. the stabilized enolate adds a proton in the separatory funnel...
11. In general both the malonic ester and acetoacetate synthesis require the addition of dilute acid...
11. In general both the malonic ester and acetoacetate synthesis require the addition of dilute acid in order to generate the final product. Why? C. the ionized cation partitions to the aqueous layer A. the alkoxy cation needs to be eliminated in the separatory funnel B. the stabilized enolate adds a proton D. this generates heat leading to decarboxylation 14. Which reagent(s) is(are) needed to complete the desired synthesis?: O ? A. NaOM, H Meo Н. I dil. HCI B....
13. Select the key step for the mechanism of decarboxylation: 0 HO OH Оме HO H2SO4...
13. Select the key step for the mechanism of decarboxylation: 0 HO OH Оме HO H2SO4 OME Me product O'HO A В. D 14. Which reagent(s) is(are) needed to complete the desired synthesis?: 0 ? A. NaOme MeO H dil. HCI B. NaOH, CHO} heat C, LDA, (MO) CO / MCPBA D. CO, heat
9. Select the product for the reaction depicted below: LDA / EtBr بل من C, A,...
9. Select the product for the reaction depicted below: LDA / EtBr بل من C, A, B. 10. Select the compound that can not be made using the malonic ester synthesis: 0 0 0 CH OMe Meo بد CH Ph CH A, B, C, Ph D,
26. Select the product for the transformation indicated: CO Me COMO Meo OME NaoMe MOH CO,...
26. Select the product for the transformation indicated: CO Me COMO Meo OME NaoMe MOH CO, Me 7 dil HCI ? OH CO, Me A. C D B. 27. Select the needed sequence of reactions to load from the starting material to the desired product: OH 0 OH A. PCC / Nah, MeOH / LDA, acetaldehyde / dil. HCI ? B. H.CrO4/LDA, Mel / LDA. propanal i dil. HCI C. MCPBA / Nah, MeBr / Nah, propyl-1/KOH D. NBS /...
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 6 (1 point) Which of the following can be prepared by acetoacetic ester synthesis? CO,...
Question 6 (1 point) Which of the following can be prepared by acetoacetic ester synthesis? CO, 1 Question 7 (1 point) What is the order of acid strength from strongest to weakest acid? floath the oth OA) 2>1>4>3 OB) 1>2>3>4 C) 3>4>1>2 D) 2>4>1>3 O R H V B N Question 8 (1 point) What is the IUPAC name for this compound? COH CH,CH,CHCH,CH.CH O2-Ethyl-2-propyl-acetic acid 3-Hexylcarboxylic acid 2 Ethylpentanoic acid 2-Propylbutanoic acid Question 9 (1 point) 16 O 7...
The scheme below shows the synthesis of an antihypertensitive agent (drug used to treat high blood...
The scheme below shows the synthesis of an antihypertensitive agent (drug used to treat high blood pressure). Answer the questions that follows. a Br 1 Br CI с CO Me + Meo H2NCO Me (Question 3) B OME CN CN CN CN 6 2 3 4 5 CO Me CO Me Buz SnNz d Final product (9) (1) KOH, heat (2) H+ work up partial hydrolysis (Question 4) CAH, CAH, CN 7 NH NEN 8 Question 1 Select the best...
11. In general both the malonic ester and acetoacetate synthesis require the addition of dilute acid in order to generate the final product. Why? A the alkoxy cation needs to be eliminated C. the ionized cation partitions to the aqueous layer B. the stabilized enolate adds a proton in the separatory funnel D. this generates heat leading to decarboxylation 0 12. Select the proper sequence of reactions needed to produce the desired final product: ? A. NaoMe, Mel/NaOMe, allyl-Br /...
1) Which product will be created by these reactions: i ) je te si are Å Br Br Br2 مل Br Br Br AcОН A. B. C. D. ii) z B. D. 2) Which of these compounds cannot be made using malonic ester synthesis? O OH Meo OME OH Ph ОН A. B. Ph C. D. 3) Why do malonic ester and acetoacetate synthesis require diluted acid to generate the final product? C. the ionized cation partitions to the aqueous...
10. Select the compound that can not be made using the malonic ester synthesis: O o O OH MeO OMe OH Ph ОН A. B. Ph C. D. 11. In general both the malonic ester and acetoacetate synthesis require the addition of dilute acid in order to generate the final product. Why? A. the alkoxy cation needs to be eliminated C. the ionized cation partitions to the aqueous layer B. the stabilized enolate adds a proton in the separatory funnel...
11. In general both the malonic ester and acetoacetate synthesis require the addition of dilute acid in order to generate the final product. Why? C. the ionized cation partitions to the aqueous layer A. the alkoxy cation needs to be eliminated in the separatory funnel B. the stabilized enolate adds a proton D. this generates heat leading to decarboxylation 14. Which reagent(s) is(are) needed to complete the desired synthesis?: O ? A. NaOM, H Meo Н. I dil. HCI B....
13. Select the key step for the mechanism of decarboxylation: 0 HO OH Оме HO H2SO4 OME Me product O'HO A В. D 14. Which reagent(s) is(are) needed to complete the desired synthesis?: 0 ? A. NaOme MeO H dil. HCI B. NaOH, CHO} heat C, LDA, (MO) CO / MCPBA D. CO, heat
9. Select the product for the reaction depicted below: LDA / EtBr بل من C, A, B. 10. Select the compound that can not be made using the malonic ester synthesis: 0 0 0 CH OMe Meo بد CH Ph CH A, B, C, Ph D,
26. Select the product for the transformation indicated: CO Me COMO Meo OME NaoMe MOH CO, Me 7 dil HCI ? OH CO, Me A. C D B. 27. Select the needed sequence of reactions to load from the starting material to the desired product: OH 0 OH A. PCC / Nah, MeOH / LDA, acetaldehyde / dil. HCI ? B. H.CrO4/LDA, Mel / LDA. propanal i dil. HCI C. MCPBA / Nah, MeBr / Nah, propyl-1/KOH D. NBS /...
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 6 (1 point) Which of the following can be prepared by acetoacetic ester synthesis? CO, 1 Question 7 (1 point) What is the order of acid strength from strongest to weakest acid? floath the oth OA) 2>1>4>3 OB) 1>2>3>4 C) 3>4>1>2 D) 2>4>1>3 O R H V B N Question 8 (1 point) What is the IUPAC name for this compound? COH CH,CH,CHCH,CH.CH O2-Ethyl-2-propyl-acetic acid 3-Hexylcarboxylic acid 2 Ethylpentanoic acid 2-Propylbutanoic acid Question 9 (1 point) 16 O 7...
The scheme below shows the synthesis of an antihypertensitive agent (drug used to treat high blood pressure). Answer the questions that follows. a Br 1 Br CI с CO Me + Meo H2NCO Me (Question 3) B OME CN CN CN CN 6 2 3 4 5 CO Me CO Me Buz SnNz d Final product (9) (1) KOH, heat (2) H+ work up partial hydrolysis (Question 4) CAH, CAH, CN 7 NH NEN 8 Question 1 Select the best...
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