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Select a correct mechanism for the following reaction. КОН H2O, CH3OH (40%) Part 1 out of...
Which of the following statements about the Aldol reaction is correct. Select all that apply. The...
Which of the following statements about the Aldol reaction is correct. Select all that apply. The aldol condensation reaction requires only a catalytic amount of base to form the a, -unsaturated carbonyl product In an Aldol reaction, the enolate is the electrophile that reacts with a neutral carbonyl nucleophile. Reacting 1 equivalent of LDA (lithium diisopropylamide) with 3-pentanone, the enolate will be formed quantitatively. Two equivalents of a ketone can be reacted with NaOH to form a B-hydroxycarbonyl product. Aldol...
СО cat. H + NH2CH3 + H2CO2C CO2CH3 CO CHE Cocaine has been prepared by a...
СО cat. H + NH2CH3 + H2CO2C CO2CH3 CO CHE Cocaine has been prepared by a sequence beginning with a Mannich reaction between dimethyl acetonedicarboxylate, methylamine, and butanedial. The mechanism involves the following steps: 1. Following initial protonation of the carbonyl oxygen, nucleophilic attack by the amine forms carbinolamine 1; 2. Proton transfer and elimination of water forms iminium ion 2; he enol form of the dicarboxylate ester attacks the iminium ion to form adduct 3; 4. Adduct 3 tautomerizes...
1. Suggest a reasonable mechanism for the following reaction. nagogo i.EtON, EtOH, 25°C ii. H,0 Answer:...
1. Suggest a reasonable mechanism for the following reaction. nagogo i.EtON, EtOH, 25°C ii. H,0 Answer: 2. There are several possible cyclization products that might be formed when 5-methyl-6-oxoheptanal undergoes intramolecular aldol condensation in presence of ethoxide. Draw the structures of all these possible products. Comment on which of these is likely to be the major product, clearly explaining your rationale Answer:
1. Draw a mechanism for the following Aldol condensation reaction under basic conditions, including the formation...
1. Draw a mechanism for the following Aldol condensation reaction under basic conditions, including the formation of the enolate. Please include ALL lone pair electrons, formal charges, and stereo/regiochemistry whenever applicable. 1) LDA, H2O 2) LAH 2. Draw a mechanism for the following Dieckmann reaction under basic conditions, including the formation of the enolate. Please include ALL lone pair electrons, formal charges, and stereo/regiochemistry whenever applicable. 1) NaOEt 2) Hзо* OEt 3. Draw a mechanism for the following alkylation reaction...
The second part of the reaction is correct, I just need help figuring out the mechanism...
The second part of the reaction is correct, I just need help
figuring out the mechanism on the first part.
Draw a mechanism for the first step of the reaction between methyllithium (CH3Li) and acetone. Then answer the two multiple choice questions underneath your mechanism. 11th attempt Part 1 (2 points) W See Periodic Table See Hint :0:
1. The reaction web includes most of the reactions of enolates we have studied. The products...
1. The reaction web includes most of the reactions of enolates we have studied. The products of these reactions can be treated with other reagents to generate new functionality - think synthesis! Make up your own examples - e.g. What if you treated compound D with CH,MgBr? In the table, summarize the types of products produced from these reactions. CH3 MgBr acid quench acid quench NaOH, H2O EIO OEt acid quench acid quench acid quench D LIAIHA acid quench acid...
10. Please Check 1 by 1 and read carefully. I would need a perfect score for...
10.
Please Check 1 by 1 and read carefully. I would need a perfect
score for this . Thanks
Select the keyword or phrase that will best complete each sentence A Claisen reaction is a nucleophilic substitution in which an enolate is the nucleophile Key terms: Robinson annulation Aldol condensation: An aldol reaction in which the initially formed p hydroxyl carbonyl compound loses water by dehydration. Claisen reaction Aldol condensation Dieckmann reaction: An intramolecular Claisen reaction of a diester to...
1) Draw the major product of the following intramolecular reaction. 2) Draw the major product of...
1) Draw the major product of the following intramolecular
reaction.
2) Draw the major product of the following reaction that begins
with a retro-aldol, followed by an intramolecular aldol
condensation.
3) Determine and draw the structures of compounds
A and B only. Do not draw the
structure of compound X. Place each structure
above its letter. HINT: Both A and
B are esters.
4) Draw a curved arrow mechanism for the following
acid-catalyzed isomerization reaction. You must show all
intermediates....
1. Suggest a reasonable mechanism for the following reaction mage. i.EtON, EtOH, 25°C ii. Hz0 Answer:...
1. Suggest a reasonable mechanism for the following reaction mage. i.EtON, EtOH, 25°C ii. Hz0 Answer: 2. There are several possible cyclization products that might be formed when 5-methyl-6-oxoheptanal undergoes intramolecular aldol condensation in presence of ethoxide. Draw the structures of all these possible products. Comment on which of these is likely to be the major product, clearly explaining your rationale. Answer:
Which intermediates are formed during the mechanism of the below reaction? Select all that apply. а АД по о - -...
Which intermediates are formed during the mechanism of the below reaction? Select all that apply. а АД по о - - CH-CH3 \ THE III НА NACH ті - о он H,с сну ота Н.с . сн, ко / H₃C Нет CH₂ Question 2 2 pts In the above reaction, you begin with 0.629 grams of the starting material (30.03 g/mol). You obtain 0.504 grams of the product (70.09 g/mol). What is the percent yield of the reaction? Question 3...
Which of the following statements about the Aldol reaction is correct. Select all that apply. The aldol condensation reaction requires only a catalytic amount of base to form the a, -unsaturated carbonyl product In an Aldol reaction, the enolate is the electrophile that reacts with a neutral carbonyl nucleophile. Reacting 1 equivalent of LDA (lithium diisopropylamide) with 3-pentanone, the enolate will be formed quantitatively. Two equivalents of a ketone can be reacted with NaOH to form a B-hydroxycarbonyl product. Aldol...
СО cat. H + NH2CH3 + H2CO2C CO2CH3 CO CHE Cocaine has been prepared by a sequence beginning with a Mannich reaction between dimethyl acetonedicarboxylate, methylamine, and butanedial. The mechanism involves the following steps: 1. Following initial protonation of the carbonyl oxygen, nucleophilic attack by the amine forms carbinolamine 1; 2. Proton transfer and elimination of water forms iminium ion 2; he enol form of the dicarboxylate ester attacks the iminium ion to form adduct 3; 4. Adduct 3 tautomerizes...
1. Suggest a reasonable mechanism for the following reaction. nagogo i.EtON, EtOH, 25°C ii. H,0 Answer: 2. There are several possible cyclization products that might be formed when 5-methyl-6-oxoheptanal undergoes intramolecular aldol condensation in presence of ethoxide. Draw the structures of all these possible products. Comment on which of these is likely to be the major product, clearly explaining your rationale Answer:
1. Draw a mechanism for the following Aldol condensation reaction under basic conditions, including the formation of the enolate. Please include ALL lone pair electrons, formal charges, and stereo/regiochemistry whenever applicable. 1) LDA, H2O 2) LAH 2. Draw a mechanism for the following Dieckmann reaction under basic conditions, including the formation of the enolate. Please include ALL lone pair electrons, formal charges, and stereo/regiochemistry whenever applicable. 1) NaOEt 2) Hзо* OEt 3. Draw a mechanism for the following alkylation reaction...
The second part of the reaction is correct, I just need help
figuring out the mechanism on the first part.
Draw a mechanism for the first step of the reaction between methyllithium (CH3Li) and acetone. Then answer the two multiple choice questions underneath your mechanism. 11th attempt Part 1 (2 points) W See Periodic Table See Hint :0:
1. The reaction web includes most of the reactions of enolates we have studied. The products of these reactions can be treated with other reagents to generate new functionality - think synthesis! Make up your own examples - e.g. What if you treated compound D with CH,MgBr? In the table, summarize the types of products produced from these reactions. CH3 MgBr acid quench acid quench NaOH, H2O EIO OEt acid quench acid quench acid quench D LIAIHA acid quench acid...
10.
Please Check 1 by 1 and read carefully. I would need a perfect
score for this . Thanks
Select the keyword or phrase that will best complete each sentence A Claisen reaction is a nucleophilic substitution in which an enolate is the nucleophile Key terms: Robinson annulation Aldol condensation: An aldol reaction in which the initially formed p hydroxyl carbonyl compound loses water by dehydration. Claisen reaction Aldol condensation Dieckmann reaction: An intramolecular Claisen reaction of a diester to...
1) Draw the major product of the following intramolecular
reaction.
2) Draw the major product of the following reaction that begins
with a retro-aldol, followed by an intramolecular aldol
condensation.
3) Determine and draw the structures of compounds
A and B only. Do not draw the
structure of compound X. Place each structure
above its letter. HINT: Both A and
B are esters.
4) Draw a curved arrow mechanism for the following
acid-catalyzed isomerization reaction. You must show all
intermediates....
1. Suggest a reasonable mechanism for the following reaction mage. i.EtON, EtOH, 25°C ii. Hz0 Answer: 2. There are several possible cyclization products that might be formed when 5-methyl-6-oxoheptanal undergoes intramolecular aldol condensation in presence of ethoxide. Draw the structures of all these possible products. Comment on which of these is likely to be the major product, clearly explaining your rationale. Answer:
Which intermediates are formed during the mechanism of the below reaction? Select all that apply. а АД по о - - CH-CH3 \ THE III НА NACH ті - о он H,с сну ота Н.с . сн, ко / H₃C Нет CH₂ Question 2 2 pts In the above reaction, you begin with 0.629 grams of the starting material (30.03 g/mol). You obtain 0.504 grams of the product (70.09 g/mol). What is the percent yield of the reaction? Question 3...
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