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9. Select the product for the reaction depicted below: LDA / EtBr بل من C, A,...
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 OH MeO Оме OH Ph OH 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 D....
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...
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...
19. Provide the product for the alkylation transformation: O LDA / EtBr product D. C. A....
19. Provide the product for the alkylation transformation: O LDA / EtBr product D. C. A. B. 22. The mixed Claisen reaction shown provides product in only a trace amount. The starting materials are obtained upon isolation. Why? CO2Me NaoMe CO2Me MeOH CO2Me / dil. HCI Ph + A. pka of the propyl ester is too high B. there is only one a-proton C. the benzoate ester is resonance stabilized D. pka of the propyl ester is too low
19. Provide the product for the alkylation transformation: o LDA / EtBr product D C. A....
19. Provide the product for the alkylation transformation: o LDA / EtBr product D C. A. B. 20. Butanal is treated with NaOH at 5 °C in water. Which compound will be obtained as the major product?: OH O HO when yol H H A. B. H
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 /...
7. For the energy diagram shown below, which letter 10. Looking ahead: predict the product of...
7. For the energy diagram shown below, which letter 10. Looking ahead: predict the product of the following reaction sequence. represents AH? 1. LDA,-78 °C ? 2. EtBr B (а) (a) A (b) В (c) C (d) D (e) E (b) (c) 8. For the energy diagram shown in question 7 above, which letter represents Ea? Br (c) C (d) D (a) A (b) в (e) E (d) no reaction will (e) 9. The reaction depicted by the energy diagram...
5. For the reaction product depicted below: a) Draw the cyclic ester that was a starting...
5. For the reaction product depicted below: a) Draw the cyclic ester that was a starting regent. b) Draw the mechanism for this reaction c) What is the Name of this type of reaction? d) Which reaction (1-10) from in-class #1 is this similar to? Cyclic Ester HO он
8. Give the major organic product of each reaction. NaOH,H,O c. mild H a. LDA b....
8. Give the major organic product of each reaction. NaOH,H,O c. mild H a. LDA b. مل، بل NaOH,H,O, heat c. mild H NaOH, H2O NaOH,H,O ) 9. Give the major organic product of each intramolecular Aldol reaction. NaOH,HO heat NaOH, H20 heat NaOH, H0
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
10. Select the compound that can not be made using the malonic ester synthesis: O O OH MeO Оме OH Ph OH 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 D....
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...
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...
19. Provide the product for the alkylation transformation: O LDA / EtBr product D. C. A. B. 22. The mixed Claisen reaction shown provides product in only a trace amount. The starting materials are obtained upon isolation. Why? CO2Me NaoMe CO2Me MeOH CO2Me / dil. HCI Ph + A. pka of the propyl ester is too high B. there is only one a-proton C. the benzoate ester is resonance stabilized D. pka of the propyl ester is too low
19. Provide the product for the alkylation transformation: o LDA / EtBr product D C. A. B. 20. Butanal is treated with NaOH at 5 °C in water. Which compound will be obtained as the major product?: OH O HO when yol H H A. B. H
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 /...
7. For the energy diagram shown below, which letter 10. Looking ahead: predict the product of the following reaction sequence. represents AH? 1. LDA,-78 °C ? 2. EtBr B (а) (a) A (b) В (c) C (d) D (e) E (b) (c) 8. For the energy diagram shown in question 7 above, which letter represents Ea? Br (c) C (d) D (a) A (b) в (e) E (d) no reaction will (e) 9. The reaction depicted by the energy diagram...
5. For the reaction product depicted below: a) Draw the cyclic ester that was a starting regent. b) Draw the mechanism for this reaction c) What is the Name of this type of reaction? d) Which reaction (1-10) from in-class #1 is this similar to? Cyclic Ester HO он
8. Give the major organic product of each reaction. NaOH,H,O c. mild H a. LDA b. مل، بل NaOH,H,O, heat c. mild H NaOH, H2O NaOH,H,O ) 9. Give the major organic product of each intramolecular Aldol reaction. NaOH,HO heat NaOH, H20 heat NaOH, H0
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
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