a) There are several reagents that can be used to effect addition to a double bond including: acid and water, oxymercuration❝demercuration reagents, and hydroboration❝oxidation reagents. Inspect the final product and select all the reasons why acid in water was chosen to effect the following transformation instead of the other reagents.
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Homework Answers
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a) There are several reagents that can be used to effect
addition to a double bond...
a) There are several reagents that can be used to effect addition to a double bond,...
a) There are several reagents that can be used to effect
addition to a double bond, including: acid and water,
oxymercuration--demercuration reagents, and
hydroboration--oxidation reagents. Inspect the final product and
select all the reasons why oxymercuration--demercuration was chosen
to effect the following transformation instead of the other
reagents.
b) Complete the mechanism for the reaction by adding curved
arrows. The reagents chosen for the transformation are: 1)
Hg(OAc)2, THF, H2O and 2) NaBH4, OH
oxymercuration–demercuration
The only part I got correct was step 3 in part b. I really need help understanding this question.There are several reagents that can be used to effect addition to a double bond, including: acid and water, oxymercuration–demercuration reagents, and hydroboration–oxidation reagents.The transformation shown utilizes oxymercuration–demecuration conditions.Inspect the final product and select all the reasons why oxymercuration–demercuration was chosen to effect the following transformation instead of the other reagents.b. Complete the mechanism for the reaction by adding curved arrows. Note, the acetate ion...
10. Provide the reagents necessary to complete the following transformation. 13. Provide the structure of the...
10.
Provide the reagents necessary to complete the following
transformation. 13. Provide the structure of the major organic
product of the reaction below
10. Provide the reagents necessary to complete the following transformation. A. 1. BH3 THF 2. H202, HO B). H20, H2SO4 C. OsO4. H202 D. CH3CO3H E. 1. CH3CO3H 2. H, H20 11. Which of the following is the best reaction sequence to use if one wants to accomplish a Markovnikov addition of water to an alkene with...
11. Consider the hydroboration oxidation and oxymeruration reactions
11. Consider the hydroboration oxidation and oxymeruration reactions Which of the following statements is TRUE? A) Both reactions will give the Markovnikov product. B) Both reactions will give the Anti-Markovnikov product C) Both reactions are subject to carbocation rearrangements D) Both reactions give alcohols with hydroboration giving anti- Markvnikov addition, oxymercuration giving Markonikov addition E) Product of this oxymercuration reaction could be achieved by using dilute H2SO4 12. Which reagents could be used to achieve the following transformation? Pick the most correct answer (where each step gives...
Acid Catalyzed Hydration-treatment of alkenes with water in the presence of acid catalyst leads to the...
Acid Catalyzed Hydration-treatment of alkenes with water in the presence of acid catalyst leads to the formation of alcohols. H2SO4/H2O > 150°C Mechanism Major Product Acid catalyzed dehydration goes through a carbocation intermediate. This means that the Markovnikov product is obtained when carbocation rearrangements do not occur. The need for excessively high temperatures makes this reaction of limited use in laboratory synthesis. Oxymercuration - Oxymercuration involves the addition of Hg to the alkene using mercury (II) acetate Hg(OAc) followed by...
Alkene reaction and mechanisms practice exercise 1) O₃ 2) (CH3)2S 25) Treatment of cyclopentene with peroxybenzoic...
Alkene reaction and mechanisms practice exercise
1) O₃ 2) (CH3)2S 25) Treatment of cyclopentene with peroxybenzoic acid A) results in oxidative cleavage of the ring to produce an acyclic compound B) yields a meso epoxide C) yields an equimolar mixture of enantiomeric epoxides D) gives the same product as treatment of cyclopentene with Os04 E) none of the above 26) Provide a detailed, step-by-step mechanism for the reaction shown below. но Br2 na + HBT Br 27) Provide a detailed,...
Identify the two diastereomeric hydroboration-oxidation products that can be formed from the following alkene by dragging...
Identify the two diastereomeric hydroboration-oxidation products that can be formed from the following alkene by dragging the product pair to the product bin. Then suggest which product should be the major product or whether they will be formed in equal amounts by dragging the appropriate label to the bin under the products. Note: If one or more labels are incorrectly placed, a single red X will appear on the top left. 1) BH3, THF 2) H2O2, -OH Incorrect. o do.com...
2 problems 1. Hg(OAC)2, H20 2. NaBHg CH3 H3C H₃C Acid-catalyzed addition of water to an...
2
problems
1. Hg(OAC)2, H20 2. NaBHg CH3 H3C H₃C Acid-catalyzed addition of water to an alkene yields an alcohol with Markovnikov regiochemistry. The electrophilic add carbon with the most hydrogens to yield the most stable carbocation intermediate, which then adds water to give the produc Because a carbocation intermediate is formed, rearrangements can occur prior to the addition of water. To avoid the possibility of rearrangement and still give a Markovnikov alcohol, alkenes can instead be treated with mercury...
CH3 CH3 1. Hg(OAC), H20 2. NaBH НО, І CH3 CH, Hoc H₃C/ Acid-catalyzed addition of...
CH3 CH3 1. Hg(OAC), H20 2. NaBH НО, І CH3 CH, Hoc H₃C/ Acid-catalyzed addition of water to an alkene yields an alcohol with Markovnikov regiochemistry. The electrophilic H adds to the sp carbon with the most hydrogens to yield the most stable carbocation intermediate, which then adds water to give the product alcohol. Because a carbocation intermediate is formed, rearrangements can occur prior to the addition of water. To avoid the possibility of rearrangement and still give a Markovnikov...
Draw curved arrows to show the movement of electrons in this step of the mechanism.
Acid-catalyzed addition of water to an alkene yields an alcohol with Markovnikov regiochemistry. The electrophilic H+ adds to the sp2 carbon with the most hydrogens to yield the most stable carbocation intermediate, which then adds water to give the product alcohol. Because a carbocation intermediate is formed, rearrangements can occur prior to the addition of water. To avoid the possibility of rearrangement and still give a Markovnikov alcohol, alkenes can instead be treated with mercury(II) acetate in aqueous THF and then subsequently...
a) There are several reagents that can be used to effect
addition to a double bond, including: acid and water,
oxymercuration--demercuration reagents, and
hydroboration--oxidation reagents. Inspect the final product and
select all the reasons why oxymercuration--demercuration was chosen
to effect the following transformation instead of the other
reagents.
b) Complete the mechanism for the reaction by adding curved
arrows. The reagents chosen for the transformation are: 1)
Hg(OAc)2, THF, H2O and 2) NaBH4, OH
10.
Provide the reagents necessary to complete the following
transformation. 13. Provide the structure of the major organic
product of the reaction below
10. Provide the reagents necessary to complete the following transformation. A. 1. BH3 THF 2. H202, HO B). H20, H2SO4 C. OsO4. H202 D. CH3CO3H E. 1. CH3CO3H 2. H, H20 11. Which of the following is the best reaction sequence to use if one wants to accomplish a Markovnikov addition of water to an alkene with...
Acid Catalyzed Hydration-treatment of alkenes with water in the presence of acid catalyst leads to the formation of alcohols. H2SO4/H2O > 150°C Mechanism Major Product Acid catalyzed dehydration goes through a carbocation intermediate. This means that the Markovnikov product is obtained when carbocation rearrangements do not occur. The need for excessively high temperatures makes this reaction of limited use in laboratory synthesis. Oxymercuration - Oxymercuration involves the addition of Hg to the alkene using mercury (II) acetate Hg(OAc) followed by...
Alkene reaction and mechanisms practice exercise
1) O₃ 2) (CH3)2S 25) Treatment of cyclopentene with peroxybenzoic acid A) results in oxidative cleavage of the ring to produce an acyclic compound B) yields a meso epoxide C) yields an equimolar mixture of enantiomeric epoxides D) gives the same product as treatment of cyclopentene with Os04 E) none of the above 26) Provide a detailed, step-by-step mechanism for the reaction shown below. но Br2 na + HBT Br 27) Provide a detailed,...
Identify the two diastereomeric hydroboration-oxidation products that can be formed from the following alkene by dragging the product pair to the product bin. Then suggest which product should be the major product or whether they will be formed in equal amounts by dragging the appropriate label to the bin under the products. Note: If one or more labels are incorrectly placed, a single red X will appear on the top left. 1) BH3, THF 2) H2O2, -OH Incorrect. o do.com...
2
problems
1. Hg(OAC)2, H20 2. NaBHg CH3 H3C H₃C Acid-catalyzed addition of water to an alkene yields an alcohol with Markovnikov regiochemistry. The electrophilic add carbon with the most hydrogens to yield the most stable carbocation intermediate, which then adds water to give the produc Because a carbocation intermediate is formed, rearrangements can occur prior to the addition of water. To avoid the possibility of rearrangement and still give a Markovnikov alcohol, alkenes can instead be treated with mercury...
CH3 CH3 1. Hg(OAC), H20 2. NaBH НО, І CH3 CH, Hoc H₃C/ Acid-catalyzed addition of water to an alkene yields an alcohol with Markovnikov regiochemistry. The electrophilic H adds to the sp carbon with the most hydrogens to yield the most stable carbocation intermediate, which then adds water to give the product alcohol. Because a carbocation intermediate is formed, rearrangements can occur prior to the addition of water. To avoid the possibility of rearrangement and still give a Markovnikov...
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