the mechanistic steps that are commonly seen in polar acidic reactions are: (Check all that apply)...
the mechanistic steps that are commonly seen in polar acidic reactions are: (Check all that apply)
1. Hydronium workup
2. Deprotonation
3. Protonation
4. Formation of an anionic tetrahedral intermediate
5. Elimination
6. Intramolecular Proton transfer
7. Nucleophilic Addition
Homework Answers
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the mechanistic steps that are commonly seen in polar acidic
reactions are: (Check all that apply)...
D 1. The mechanistic steps that are commonly seen in polar acidic reactions are: (check all...
D 1. The mechanistic steps that are commonly seen in polar acidic reactions are: (check all that apply) Select all that apply intramolecular proton transfer elimination hydronium work-up deprotonation formation of an anionic tetrahedral intermediate nucleophilic addition protonation D 2. The dehydration of an alcohol to form an alkene is the reverse reaction of a Fischer esterification. False True D 3. Markovnikov's rule states: the major product forms from the most stable carbocation the major products forms from the least...
Mechanism Practice Complete the elementary steps below by adding mechanistic arrows to show how the product...
Mechanism Practice Complete the elementary steps below by adding mechanistic arrows to show how the product is formed. For some of the reactions, you will need to determine the products as well. Make sure you show all formal charges and all lone pairs that are involved in the mechanism! Nucleophilic Addition H. +HOCH Proton Transfer (intramolecular) Deprotonation (intermolecular OH +
6) 5-Hydroxypentanal reacting with ethanol under acidic catalysis forms two enantiomers and o Sho...
6) 5-Hydroxypentanal reacting with ethanol under acidic catalysis forms two enantiomers and o Show full mechanism of products formation. (6 points) i Label each step of the reaction as protonation, nucleophilic addition with cyclization, elimination, nucleophilic addition, or deprotonation. (2 points) (ii) Circle the oxonium ion intermediate. (I points) i) Make one sentence statement why racemic mixture will be the product of the reaction. (I points)
6) 5-Hydroxypentanal reacting with ethanol under acidic catalysis forms two enantiomers and o Show...
O EtOCOET H N Eto EtOH Reactions of a primary or secondary amine with diethyl carbonate...
O EtOCOET H N Eto EtOH Reactions of a primary or secondary amine with diethyl carbonate under controlled conditions gives a carbamic ester. Write a detailed mechanism for this reaction (shown above) which proceeds in 4 steps, including proton transfer steps. Then draw Intermediate 3 in the window provided. The mechanism is detailed as follows: Step 1: Nucleophilic attack to yield zwitterion intermediate 1. Step 2: Protonation/deprotonation (i.e. "proton transfer") of zwitterion 1 to yield intermediate 2. Step 3: Intramolecular...
In each of the following nucleophilic addition reactions (i) using arrows provide a mechanistic explanation of...
In each of the following nucleophilic addition reactions (i) using arrows provide a mechanistic explanation of the course of the reaction (show intermediates); (ii) write the product of the reaction. (32 points) a. Show mechanism of acetal formation through hemiacetal reacting acetone with (1R,2S)- cyclopentan-1,2-diol under acidic catalysis. The actal formation reaction from hemiacetal is intramolecular reaction. (6 points = 3 points for hemiacetal + 3 points for acetal)
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...
extra credit orgo chem NaBH MOH 1.Write two starting materials (five or fewer C's) that react...
extra credit orgo chem
NaBH MOH 1.Write two starting materials (five or fewer C's) that react to form the target molecule starting from any carbonyl compound and any organometallic reagent. OH Part IV. Mechanistic Puzzlers (16 pts) 10. Reduction of cyclohexanone using lithium aluminum hydride gives a deuterated alcohol when D.O is used instead of H.O in the workup step. Account for this outcome with a mechanism, showing curved arrows, the key intermediate, and lone pairs and charges. (6 pts)...
1-24 need help really lost Proton Transfer: deprotonation D. 1) Add the appropriate curved arrows for...
1-24 need help really lost
Proton Transfer: deprotonation D. 1) Add the appropriate curved arrows for the following deprotonation step. Also add the other product notice how the Tema s can be converted to this by use of a strong base such as sodium a sodium ion (Na) is not drawn, in this case it is just a spectatorio PCW27 - Mechanistic steps - Part Name: Time spent 2) Label the above compounds with the appropriate name from the previous...
tivities Electron pairs :0: :0: 9 H:03 :0—H I- Erase H-CC-HH-CC-H I- H-OH Write the first...
tivities Electron pairs :0: :0: 9 H:03 :0—H I- Erase H-CC-HH-CC-H I- H-OH Write the first step of this aldol reaction using curved arrows to show electron reorganization. H OHH dilute ag NaOH H-CC-C 0- 0-0-1 АН HH ethana "aldor Recheckt (2017) Nat Et Ethanol pe 1 pt The double cyclization (above) proceeds by formation of an enolate followed by two successive intramolecular Michael reactions 1 pt Write a detailed mechanism for this reaction on paper, then draw structural formulas...
please snswer all thanks 5. For the following reaction step, indicate which pattern of arrow pushing...
please snswer all thanks
5. For the following reaction step, indicate which pattern of arrow pushing it represents. Circle one. A. proton transfer C. nucleophilic attack B. loss of leaving group D. rearrangement 6. The following reaction has three mechanistic steps (down, across, and up), Draw all of the curved arrows necessary to complete the mechanism. (Hint: there should be 4 arrows total) HBO OH Br H-Br OH2 + Hö 7. Draw the most likely structure of the following cation...
D 1. The mechanistic steps that are commonly seen in polar acidic reactions are: (check all that apply) Select all that apply intramolecular proton transfer elimination hydronium work-up deprotonation formation of an anionic tetrahedral intermediate nucleophilic addition protonation D 2. The dehydration of an alcohol to form an alkene is the reverse reaction of a Fischer esterification. False True D 3. Markovnikov's rule states: the major product forms from the most stable carbocation the major products forms from the least...
Mechanism Practice Complete the elementary steps below by adding mechanistic arrows to show how the product is formed. For some of the reactions, you will need to determine the products as well. Make sure you show all formal charges and all lone pairs that are involved in the mechanism! Nucleophilic Addition H. +HOCH Proton Transfer (intramolecular) Deprotonation (intermolecular OH +
6) 5-Hydroxypentanal reacting with ethanol under acidic catalysis forms two enantiomers and o Show full mechanism of products formation. (6 points) i Label each step of the reaction as protonation, nucleophilic addition with cyclization, elimination, nucleophilic addition, or deprotonation. (2 points) (ii) Circle the oxonium ion intermediate. (I points) i) Make one sentence statement why racemic mixture will be the product of the reaction. (I points)
6) 5-Hydroxypentanal reacting with ethanol under acidic catalysis forms two enantiomers and o Show...
O EtOCOET H N Eto EtOH Reactions of a primary or secondary amine with diethyl carbonate under controlled conditions gives a carbamic ester. Write a detailed mechanism for this reaction (shown above) which proceeds in 4 steps, including proton transfer steps. Then draw Intermediate 3 in the window provided. The mechanism is detailed as follows: Step 1: Nucleophilic attack to yield zwitterion intermediate 1. Step 2: Protonation/deprotonation (i.e. "proton transfer") of zwitterion 1 to yield intermediate 2. Step 3: Intramolecular...
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...
extra credit orgo chem
NaBH MOH 1.Write two starting materials (five or fewer C's) that react to form the target molecule starting from any carbonyl compound and any organometallic reagent. OH Part IV. Mechanistic Puzzlers (16 pts) 10. Reduction of cyclohexanone using lithium aluminum hydride gives a deuterated alcohol when D.O is used instead of H.O in the workup step. Account for this outcome with a mechanism, showing curved arrows, the key intermediate, and lone pairs and charges. (6 pts)...
1-24 need help really lost
Proton Transfer: deprotonation D. 1) Add the appropriate curved arrows for the following deprotonation step. Also add the other product notice how the Tema s can be converted to this by use of a strong base such as sodium a sodium ion (Na) is not drawn, in this case it is just a spectatorio PCW27 - Mechanistic steps - Part Name: Time spent 2) Label the above compounds with the appropriate name from the previous...
tivities Electron pairs :0: :0: 9 H:03 :0—H I- Erase H-CC-HH-CC-H I- H-OH Write the first step of this aldol reaction using curved arrows to show electron reorganization. H OHH dilute ag NaOH H-CC-C 0- 0-0-1 АН HH ethana "aldor Recheckt (2017) Nat Et Ethanol pe 1 pt The double cyclization (above) proceeds by formation of an enolate followed by two successive intramolecular Michael reactions 1 pt Write a detailed mechanism for this reaction on paper, then draw structural formulas...
please snswer all thanks
5. For the following reaction step, indicate which pattern of arrow pushing it represents. Circle one. A. proton transfer C. nucleophilic attack B. loss of leaving group D. rearrangement 6. The following reaction has three mechanistic steps (down, across, and up), Draw all of the curved arrows necessary to complete the mechanism. (Hint: there should be 4 arrows total) HBO OH Br H-Br OH2 + Hö 7. Draw the most likely structure of the following cation...
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