Homework Answers
The hydroboration-oxidation reaction part is an anti-Markonikov reaction, where the -BH2 group, in presence of THF, attaches to the less substituted carbon atom, followed by hydroxyl group in the same place. The hydroxyl group addition is a syn addition which gives a cis arrangement of molecule.
Therefore, F. anti-Markonikov and syn addition
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QUESTION 3 The hydroboration-oxidation reaction produces a O A Markovnikov O B. anti-Markovnikov addition. O C...
The regiochemistry of hydroboration/oxidation of alkenes is: (a) (b) (c) (d) (e) Markovnikov non-Markovnikov subject to...
The regiochemistry of hydroboration/oxidation of alkenes is: (a) (b) (c) (d) (e) Markovnikov non-Markovnikov subject to solvent effects unrelated to alkene structure it is a not a regiospecific reaction.
13. The regiochemistry of hydroboration/oxidation of alkenes is: page (a) (b) (c) (d) (e) Markovnikov non-Markovnikov...
13. The regiochemistry of hydroboration/oxidation of alkenes is: page (a) (b) (c) (d) (e) Markovnikov non-Markovnikov subject to solvent effects unrelated to alkene structure it is a not a regiospecific reaction. 14. What is the major product of the following reaction? HgSO4 ? H30* (a) (b) OH (c) (d) (e) OH Н H OH
Hydroboration of propene involves 'Anti-Markovnikov' addition while addition of HBr to propene follows the Markovnikov rule....
Hydroboration of propene involves 'Anti-Markovnikov' addition while addition of HBr to propene follows the Markovnikov rule. Show that both of these apparently contrasting reactions actually reflect a single underlying mechanistic principle
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...
Please answer 13. The regiochemistry of hydroboration/oxidation of alkenes is: (a) Markovnikov (b) non-Markovnikov (c) subject...
Please answer
13. The regiochemistry of hydroboration/oxidation of alkenes is: (a) Markovnikov (b) non-Markovnikov (c) subject to solvent effects (d) unrelated to alkene structure it is a not a regiospecific reaction. 14. What is the major product of the following reaction? HgSO4 H30* ? (a) (b) (c) (d) OH OH od ver H OH 15. Which conformation(s) of the two isomers A & B shown below is/are the most stable: А B Me Me (a) A, with the methyl group...
C Each of the transformations define as: Syn or anti Markovnikov or anti-Markovnikov A B C...
C Each of the transformations define as: Syn or anti Markovnikov or anti-Markovnikov A B C 2. Predict the products: A В 1. Hg(OAc)2, H20 НаО, Н,SO, 2. NaBH,, ОH 1. BH, THF C 2. H202, OH
Question 3 (2 points) Provide the best description for an oxymercuration demercuration reaction of an alkene....
Question 3 (2 points) Provide the best description for an oxymercuration demercuration reaction of an alkene. a) Anti-Markovnikov orientation with anti-addition Ob) Markovnikov orientation with anti-addition Oc) Anti-Markovnikov orientation with syn-addition O d) Markovnikov orientation with syn-addition Question 4 (2 points) How many signals would you expect in the 'H NMR spectrum of the following compound? O a) 4 Ob) 5 Oc) 7 O d) 6
The addition of HBr follows the Markovnikov regiochemistry and the syn and anti stereochemistry. How many...
The addition of HBr follows the Markovnikov regiochemistry and the syn and anti stereochemistry. How many stereochemical products (or stereoisomers) are formed in the following reaction? HBr 6 2. 4
Identify the anti-Markovnikov-addition product of the following reaction. HBT A) B) D) Br he
Identify the anti-Markovnikov-addition product of the following reaction. HBT A) B) D) Br he
Question 33 (2 points) Provide the best description for an oxymercuration demercuration reaction of an alkene....
Question 33 (2 points) Provide the best description for an oxymercuration demercuration reaction of an alkene. O a) Markovnikov orientation with anti-addition Ob) Anti-Markovnikov orientation with anti-addition Oc) Markovnikov orientation with syn-addition d) Anti-Markovnikov orientation with syn-addition Question 34 (2 points) What is the IUPAC name of the structure below? NO2 F OH a) 1-fluoro-3-iodo-5-hydroxynitrobenzene Ob) 1-fluoro-2-nitro-3-iodo-5-phenol Oc) 3-fluoro-5-iodo-4-nitrophenol d) m-fluoro-m-iodo-p-nitrophenol
The regiochemistry of hydroboration/oxidation of alkenes is: (a) (b) (c) (d) (e) Markovnikov non-Markovnikov subject to solvent effects unrelated to alkene structure it is a not a regiospecific reaction.
13. The regiochemistry of hydroboration/oxidation of alkenes is: page (a) (b) (c) (d) (e) Markovnikov non-Markovnikov subject to solvent effects unrelated to alkene structure it is a not a regiospecific reaction. 14. What is the major product of the following reaction? HgSO4 ? H30* (a) (b) OH (c) (d) (e) OH Н H OH
Please answer
13. The regiochemistry of hydroboration/oxidation of alkenes is: (a) Markovnikov (b) non-Markovnikov (c) subject to solvent effects (d) unrelated to alkene structure it is a not a regiospecific reaction. 14. What is the major product of the following reaction? HgSO4 H30* ? (a) (b) (c) (d) OH OH od ver H OH 15. Which conformation(s) of the two isomers A & B shown below is/are the most stable: А B Me Me (a) A, with the methyl group...
C Each of the transformations define as: Syn or anti Markovnikov or anti-Markovnikov A B C 2. Predict the products: A В 1. Hg(OAc)2, H20 НаО, Н,SO, 2. NaBH,, ОH 1. BH, THF C 2. H202, OH
Question 3 (2 points) Provide the best description for an oxymercuration demercuration reaction of an alkene. a) Anti-Markovnikov orientation with anti-addition Ob) Markovnikov orientation with anti-addition Oc) Anti-Markovnikov orientation with syn-addition O d) Markovnikov orientation with syn-addition Question 4 (2 points) How many signals would you expect in the 'H NMR spectrum of the following compound? O a) 4 Ob) 5 Oc) 7 O d) 6
The addition of HBr follows the Markovnikov regiochemistry and the syn and anti stereochemistry. How many stereochemical products (or stereoisomers) are formed in the following reaction? HBr 6 2. 4
Identify the anti-Markovnikov-addition product of the following reaction. HBT A) B) D) Br he
Question 33 (2 points) Provide the best description for an oxymercuration demercuration reaction of an alkene. O a) Markovnikov orientation with anti-addition Ob) Anti-Markovnikov orientation with anti-addition Oc) Markovnikov orientation with syn-addition d) Anti-Markovnikov orientation with syn-addition Question 34 (2 points) What is the IUPAC name of the structure below? NO2 F OH a) 1-fluoro-3-iodo-5-hydroxynitrobenzene Ob) 1-fluoro-2-nitro-3-iodo-5-phenol Oc) 3-fluoro-5-iodo-4-nitrophenol d) m-fluoro-m-iodo-p-nitrophenol
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