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 the desired major product).
Homework Answers
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11. Consider the hydroboration oxidation and oxymeruration reactions
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
acid in water was chosen to effect the following transformation
instead of the other reagents.
\\
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...
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...
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...
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,...
Experiment 8 - Addition to Alkenes What is Markovnikov's Rule? Chem 2321 In this experiment you...
Experiment 8 - Addition to Alkenes What is Markovnikov's Rule? Chem 2321 In this experiment you will synthesize a brom ohydrin according to the reaction shown below. Using infrared (IR) spectroscopy and a simple chemical test, you will determine which product (Markovnikov or anti-Markovnikov) is formed. N-bromosuccinimide Br (NBS) но or н.о, THF ""сн, он "Br CH3 CH3 1-methylcyclohexene Markovnikov product anti-Markovnikov product Halogenation of alkenes is an important reaction in organic chemistry. When carried out in an aqueous solution,...
1. Give the structure of the product(s) for the following addition reactions. Show appropriate stereochemistry if...
1. Give the structure of the product(s) for the following addition reactions. Show appropriate stereochemistry if necessary to get the full credits. (5 points) 50% H2SO4 50% H20 1. BH3, THF 2. H2O2/KOH CH3COOH ry condon YY PEO 1. 03 2. Zn/H2O 2. Give the syn or anti addition products for the following addition reactions. Show appropriate stereochemistry if necessary to get the full credits. (5 points total) Hz/Pt 1 point 1 point Hypt DBk Det ook o BryH2O 1....
one of the Kekulé structures is not consistent with valence rules? 3. How many degrees of...
one of the Kekulé structures is not consistent with valence rules? 3. How many degrees of unsaturation (double bond equivalents) ore fouand in 3 O-H 4. The regiochemistry of Markovnikov with no rearrangements of alkenes is c. subject to solvent effects 5. The kinetics of this reaction is. a. first-order b. c, cannot be determined 6. Hydroboration/oxidation of alkenes occurs with a. syn b. trans c. anti d. random 7. The reaction of an alkene with dichlorocarbene is: 8. The...
Please completely answer the questions, thank you! For the reactions below, 1. supply the reagents needed...
Please completely answer the questions, thank you!
For the reactions below, 1. supply the reagents needed to carry out the reaction, by writing them above the reaction arrow. 2. Use choices 1A through 11, 2A through 24, and 3A through 3X, above to answer the questions about reaction types and mechanistic details. 3. For the reactions in column 3, that require you to diagram the mechanism, diagram the mechanism. Column 1 Column 2 Column 3 Type of Reaction The Reason...
146 ChemActivity 10: Oxidation and Reduction Model 8: Stereoselective Oxidative Cleavage of a x Bond Synthetic...
146 ChemActivity 10: Oxidation and Reduction Model 8: Stereoselective Oxidative Cleavage of a x Bond Synthetic Transformation 10.9: Syn Addition of Two OH Groups to ax Bond H OH но OsO4 or OH NaHSO a cold, dilute KMnO, solution, followed by KOH can be used in place of the highly toxic OsO Review of Synthetic Transformations 9.3/9.4 H HOHO OH acide ring opening eр МCРВА or 1) Кон. 2) neutrize with dilute acid basic ring opening он Critical Thinking Question...
Complete questions 10-27 PART II: REACTIONS: Here is another different" question. Pretend you have been asked...
Complete questions 10-27
PART II: REACTIONS: Here is another different" question. Pretend you have been asked by me to put together a bunch of one-step reactions WITH starting materials (your choice), reagents and answers to help me with writing a final exam. For example: let's say I ask you to give an example of a free radical chlorination with a non-cyclic compound. Below would be your answer. As I am pretty sure you can figure out, there are millions of...
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.
\\
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...
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...
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...
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,...
Experiment 8 - Addition to Alkenes What is Markovnikov's Rule? Chem 2321 In this experiment you will synthesize a brom ohydrin according to the reaction shown below. Using infrared (IR) spectroscopy and a simple chemical test, you will determine which product (Markovnikov or anti-Markovnikov) is formed. N-bromosuccinimide Br (NBS) но or н.о, THF ""сн, он "Br CH3 CH3 1-methylcyclohexene Markovnikov product anti-Markovnikov product Halogenation of alkenes is an important reaction in organic chemistry. When carried out in an aqueous solution,...
1. Give the structure of the product(s) for the following addition reactions. Show appropriate stereochemistry if necessary to get the full credits. (5 points) 50% H2SO4 50% H20 1. BH3, THF 2. H2O2/KOH CH3COOH ry condon YY PEO 1. 03 2. Zn/H2O 2. Give the syn or anti addition products for the following addition reactions. Show appropriate stereochemistry if necessary to get the full credits. (5 points total) Hz/Pt 1 point 1 point Hypt DBk Det ook o BryH2O 1....
one of the Kekulé structures is not consistent with valence rules? 3. How many degrees of unsaturation (double bond equivalents) ore fouand in 3 O-H 4. The regiochemistry of Markovnikov with no rearrangements of alkenes is c. subject to solvent effects 5. The kinetics of this reaction is. a. first-order b. c, cannot be determined 6. Hydroboration/oxidation of alkenes occurs with a. syn b. trans c. anti d. random 7. The reaction of an alkene with dichlorocarbene is: 8. The...
Please completely answer the questions, thank you!
For the reactions below, 1. supply the reagents needed to carry out the reaction, by writing them above the reaction arrow. 2. Use choices 1A through 11, 2A through 24, and 3A through 3X, above to answer the questions about reaction types and mechanistic details. 3. For the reactions in column 3, that require you to diagram the mechanism, diagram the mechanism. Column 1 Column 2 Column 3 Type of Reaction The Reason...
146 ChemActivity 10: Oxidation and Reduction Model 8: Stereoselective Oxidative Cleavage of a x Bond Synthetic Transformation 10.9: Syn Addition of Two OH Groups to ax Bond H OH но OsO4 or OH NaHSO a cold, dilute KMnO, solution, followed by KOH can be used in place of the highly toxic OsO Review of Synthetic Transformations 9.3/9.4 H HOHO OH acide ring opening eр МCРВА or 1) Кон. 2) neutrize with dilute acid basic ring opening он Critical Thinking Question...
Complete questions 10-27
PART II: REACTIONS: Here is another different" question. Pretend you have been asked by me to put together a bunch of one-step reactions WITH starting materials (your choice), reagents and answers to help me with writing a final exam. For example: let's say I ask you to give an example of a free radical chlorination with a non-cyclic compound. Below would be your answer. As I am pretty sure you can figure out, there are millions of...
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