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13. Select the key step for the mechanism of decarboxylation: 0 HO OH Оме HO H2SO4...
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....
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 /...
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....
23. Select the product for the reaction shown: NaOH Ph H2O, THE 5°C ? OH OH...
23. Select the product for the reaction shown: NaOH Ph H2O, THE 5°C ? OH OH Ph Ph A. Ph B. C. Ph D. 3 27. Select the needed sequence of reactions to lead from the starting material to the desired product: OH OH A. PCC / Nah, MeOH / LDA, acetaldehyde / dil. HCI ? B. H2CrO4 / LDA, Mel / LDA, propanal i dil. HCI C. MCPBA / Nah, MeBr / Nah, propyl-1 / KOH D. NBS /...
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...
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 /...
24. When enones are treated with peroxide under basic conditions, epoxy ketones are formed. Which intermediate...
24. When enones are treated with peroxide under basic conditions, epoxy ketones are formed. Which intermediate is consistent with the mechanism?: 3-OK OK ко, р-он OK KOH HOOH OH ОН "O-OH B. C. D O 25. A key step in the synthesis of a piperidine drug is shown below. Which reagent is needed to allow the reaction to proceed?: ? Eto, Ph NMe A. 2 NaCl C. 2 NaNO, ΟΕΙ Me Ph B. 2NaOEt D. EtOH, 5C CI CI 26....
30. Select the product for the reaction shown below: HO KOH A. B. C. 31. Provide...
30. Select the product for the reaction shown below: HO KOH A. B. C. 31. Provide the final product that results upon completion of the multi-step synthesis shown: NaoMe MeOH NaoMe H30+ / dil A Ph3P=CH2 ? OMe HCI Br Br NaOME O OH OH P+Ph3 Br A. Br C. D. B. CO2H
Give the major organic product(s) of the following reaction. CH2CH2CH2Br (1 mole) Name CH3OH heat OH...
Give the major organic product(s) of the following reaction. CH2CH2CH2Br (1 mole) Name CH3OH heat OH Me Meo Y ome OMe Meo OMe OH 0 0 0 HO There is no reaction under these conditions or the correct product is not listed here. Give the major organic product of the following reaction. NaOme CH3CH Br | NaOH, H2O H30+ CH2OH heat heat heat HOX OH - Co₂H 0 0 Meo ОMe ОН Meo ОMe но тон Оснон There is no...
но моме cat. H2SO4 Dean-Stark trap PhyO SOCl2 OH Ph^ Ph Br La Pryo NEtz Croz...
но моме cat. H2SO4 Dean-Stark trap PhyO SOCl2 OH Ph^ Ph Br La Pryo NEtz Croz H2SO4 6 Nao 1) LDA, -78 °C 2) 0 CO2Me HPh (give a reactant and a reagent) (sterochem. can be neglected; elim. product (alkene) also okay) 1) PhBr 2) HCI/H20 molecular sieves (dehydrating agent) OMe 1) NaOME 2) Mel 3) LiOH 4) HCI (quench) 5) 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....
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 /...
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....
23. Select the product for the reaction shown: NaOH Ph H2O, THE 5°C ? OH OH Ph Ph A. Ph B. C. Ph D. 3 27. Select the needed sequence of reactions to lead from the starting material to the desired product: OH OH A. PCC / Nah, MeOH / LDA, acetaldehyde / dil. HCI ? B. H2CrO4 / LDA, Mel / LDA, propanal i dil. HCI C. MCPBA / Nah, MeBr / Nah, propyl-1 / KOH D. NBS /...
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...
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 /...
24. When enones are treated with peroxide under basic conditions, epoxy ketones are formed. Which intermediate is consistent with the mechanism?: 3-OK OK ко, р-он OK KOH HOOH OH ОН "O-OH B. C. D O 25. A key step in the synthesis of a piperidine drug is shown below. Which reagent is needed to allow the reaction to proceed?: ? Eto, Ph NMe A. 2 NaCl C. 2 NaNO, ΟΕΙ Me Ph B. 2NaOEt D. EtOH, 5C CI CI 26....
30. Select the product for the reaction shown below: HO KOH A. B. C. 31. Provide the final product that results upon completion of the multi-step synthesis shown: NaoMe MeOH NaoMe H30+ / dil A Ph3P=CH2 ? OMe HCI Br Br NaOME O OH OH P+Ph3 Br A. Br C. D. B. CO2H
Give the major organic product(s) of the following reaction. CH2CH2CH2Br (1 mole) Name CH3OH heat OH Me Meo Y ome OMe Meo OMe OH 0 0 0 HO There is no reaction under these conditions or the correct product is not listed here. Give the major organic product of the following reaction. NaOme CH3CH Br | NaOH, H2O H30+ CH2OH heat heat heat HOX OH - Co₂H 0 0 Meo ОMe ОН Meo ОMe но тон Оснон There is no...
но моме cat. H2SO4 Dean-Stark trap PhyO SOCl2 OH Ph^ Ph Br La Pryo NEtz Croz H2SO4 6 Nao 1) LDA, -78 °C 2) 0 CO2Me HPh (give a reactant and a reagent) (sterochem. can be neglected; elim. product (alkene) also okay) 1) PhBr 2) HCI/H20 molecular sieves (dehydrating agent) OMe 1) NaOME 2) Mel 3) LiOH 4) HCI (quench) 5) heat
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