Which of the following reagent can provide chlorohydrin with alkene?
17- Which of the following reagent can provide chlorohydrin with alkene?
A) Cl2/H2O B) Br2/H2O C) HBr/H2O D) HCI/H2O
18- Hydroboration of alkene proceed via
A) Anti-Markovnikov rule B) Markovnikov rule C) Saytzeff's Rule D) Anti-Saytzeff's Rule
19. Which of the following compounds carbonium ion is more stable?
Homework Answers
17. For chlorohydrin synthesis the reagent should be Cl2/H2O (Option A).
Mechanisms-
Add Answer to:
Which of the following reagent can provide chlorohydrin with alkene?
Which of the following accounts for the anti-Markovnikov regiochemistry of the reaction of an alkene with...
Which of the following accounts for the anti-Markovnikov regiochemistry of the reaction of an alkene with HBr in the presence of peroxides? A) The alkene reacts with HBr to give a carbocation B) The alkene reacts with a bromine radical to give an alkyl radical C) The alkene reacts with peroxide to give an vinylic radical D) The alkene reacts with peroxide to give an allylic radical
15) What synthetic goal is achieved by subjecting an alkene to BH3-THF, followed by oxidative working...
15) What synthetic goal is achieved by subjecting an alkene to BH3-THF, followed by oxidative working using H2O2 and NaOH? A) Markovnikov addition of water where relative stereochemistry is preserved B) Markovnikov addition of water where relative stereochemistry is scrambled (or destroyed) C) Anti-Markovnikov addition of water where relative stereochemistry is preserved D) Anti-Markovnikov addition of water where relative stereochemistry is scrambled (or destroyed) 16) Which of the following reaction occur by anti-addition to an alkene? A) Br2 B) BH3-THF,...
?? 16. Which of the following reagents would promote non-Markovnikov addition to an alkene? a. 1....
??
16. Which of the following reagents would promote non-Markovnikov addition to an alkene? a. 1. Hg(OAc)2, H20/THF, 2. NaBH4 b. KBr/KOH c. H30+ d. 1. BH3, THF 2. H202OH- 17. Halohydrin formation would be achieved by reacting an alkene with which of the following? a. b. c. d. Cl2 and water Water and methanol Os04 H2 and a catalyst 18. Reacting an alkene with 03 followed by Zn/H2O+ will create, a. Two carboxylic acids b. Two ketones c. One...
Question 3 (2 points) Predict the product(s) of the following reaction. HBr ROOR a) HBr addition...
Question 3 (2 points) Predict the product(s) of the following reaction. HBr ROOR a) HBr addition at the alkene position following Markonikov's rule Ob) H20 addition at the alkene position following Markonikov's rule c) HBr addition at the alkene position following Anti-Markonikov's rule d) H20 addition at the alkene position following Anti-Markonikov's rule Question 4 (2 points) For which of the following compounds will the M+2 peak intensity be equal to the intensity of the molecular ion peak M? a)...
4.(18 points) Using the arrow, provide the detailed reaction conditions necessary to give the following. You...
4.(18 points) Using the arrow, provide the detailed reaction conditions necessary to give the following. You do not need to provide any starting material or product, just the reaction conditions (see example below) 1.B Example: Show reagent 'B' followed by aqueous acid: 2. H30 a. Markovnikov addition of H2O to a double bond: b. Anti-Markovnikov addition of H2O to a double bond: c. Markovnikov addition to form an alkyl bromide from an alkene: d. Reaction conditions to change 1,2-dimethylcyclohexene into...
2. Which of the following addition reactions are anti additions (lead to trans products)? (a) Br2...
2. Which of the following addition reactions are anti additions (lead to trans products)? (a) Br2 addition to an alkene (b) Catalytic hydrogenation of an alkene. (c) HBr addition to an alkene (d) OsO4 addition to alkene (e) All of the above 3. Which of the following addition reactions are stereospecific? (a) Cl2 addition to a disubstituted alkene (b) HBr addition to a trisubstituted alkene (C) Radical addition of Cl2 to CH4 (d) Oxidation of a trisubstituted alkenes by using...
Which of the following addition reactions are anti additions (lead to trans products)? (a) Br2 addition...
Which of the following addition reactions are anti additions (lead to trans products)? (a) Br2 addition to an alkene (b) Catalytic hydrogenation of an alkene. (c) HBr addition to an alkene (d) OsO4 addition to alkene (e) All of the above Which of the following addition reactions are stereospecific? (a) Cl2 addition to a disubstituted alkene (b) HBr addition to a trisubstituted alkene (c) Radical addition of Cl2 to CH4 (d) Oxidation of a trisubstituted alkenes by using 03, Zn...
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,...
ANSWERS ONLY NO EXPLANATION NEEDED ! [14]. The rate of Sy I reaction is propontional to...
ANSWERS ONLY NO EXPLANATION NEEDED !
[14]. The rate of Sy I reaction is propontional to (A) Base concentration (B) RX concentration (D) RX and Nucleophile concentrations (C) Nucleophile oncematī (E) leaving group concentration [15]. Which statement is true about the result in oxymercurstion-reduction reaction 7 (A) Markovnikov addition of HO (B) Markovnikov addition of H, (C) Anti-Markovlkow (D) Anti-Markovnikov addition of H (E) none of the shove addition ef HO [16]. The reagent to convert eyclohexene to trans-cycl ch...
Which of the following addition reactions are stereospecific? (a) Cl2 addition to a disubstituted alkene (b)...
Which of the following addition reactions are stereospecific? (a) Cl2 addition to a disubstituted alkene (b) HBr addition to a trisubstituted alkene (c) Radical addition of Cl2 to CH4 (d) Oxidation of a trisubstituted alkenes by using O3, Zn and H2O (e) Two of the above
Which of the following accounts for the anti-Markovnikov regiochemistry of the reaction of an alkene with HBr in the presence of peroxides? A) The alkene reacts with HBr to give a carbocation B) The alkene reacts with a bromine radical to give an alkyl radical C) The alkene reacts with peroxide to give an vinylic radical D) The alkene reacts with peroxide to give an allylic radical
15) What synthetic goal is achieved by subjecting an alkene to BH3-THF, followed by oxidative working using H2O2 and NaOH? A) Markovnikov addition of water where relative stereochemistry is preserved B) Markovnikov addition of water where relative stereochemistry is scrambled (or destroyed) C) Anti-Markovnikov addition of water where relative stereochemistry is preserved D) Anti-Markovnikov addition of water where relative stereochemistry is scrambled (or destroyed) 16) Which of the following reaction occur by anti-addition to an alkene? A) Br2 B) BH3-THF,...
??
16. Which of the following reagents would promote non-Markovnikov addition to an alkene? a. 1. Hg(OAc)2, H20/THF, 2. NaBH4 b. KBr/KOH c. H30+ d. 1. BH3, THF 2. H202OH- 17. Halohydrin formation would be achieved by reacting an alkene with which of the following? a. b. c. d. Cl2 and water Water and methanol Os04 H2 and a catalyst 18. Reacting an alkene with 03 followed by Zn/H2O+ will create, a. Two carboxylic acids b. Two ketones c. One...
Question 3 (2 points) Predict the product(s) of the following reaction. HBr ROOR a) HBr addition at the alkene position following Markonikov's rule Ob) H20 addition at the alkene position following Markonikov's rule c) HBr addition at the alkene position following Anti-Markonikov's rule d) H20 addition at the alkene position following Anti-Markonikov's rule Question 4 (2 points) For which of the following compounds will the M+2 peak intensity be equal to the intensity of the molecular ion peak M? a)...
4.(18 points) Using the arrow, provide the detailed reaction conditions necessary to give the following. You do not need to provide any starting material or product, just the reaction conditions (see example below) 1.B Example: Show reagent 'B' followed by aqueous acid: 2. H30 a. Markovnikov addition of H2O to a double bond: b. Anti-Markovnikov addition of H2O to a double bond: c. Markovnikov addition to form an alkyl bromide from an alkene: d. Reaction conditions to change 1,2-dimethylcyclohexene into...
2. Which of the following addition reactions are anti additions (lead to trans products)? (a) Br2 addition to an alkene (b) Catalytic hydrogenation of an alkene. (c) HBr addition to an alkene (d) OsO4 addition to alkene (e) All of the above 3. Which of the following addition reactions are stereospecific? (a) Cl2 addition to a disubstituted alkene (b) HBr addition to a trisubstituted alkene (C) Radical addition of Cl2 to CH4 (d) Oxidation of a trisubstituted alkenes by using...
Which of the following addition reactions are anti additions (lead to trans products)? (a) Br2 addition to an alkene (b) Catalytic hydrogenation of an alkene. (c) HBr addition to an alkene (d) OsO4 addition to alkene (e) All of the above Which of the following addition reactions are stereospecific? (a) Cl2 addition to a disubstituted alkene (b) HBr addition to a trisubstituted alkene (c) Radical addition of Cl2 to CH4 (d) Oxidation of a trisubstituted alkenes by using 03, Zn...
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,...
ANSWERS ONLY NO EXPLANATION NEEDED !
[14]. The rate of Sy I reaction is propontional to (A) Base concentration (B) RX concentration (D) RX and Nucleophile concentrations (C) Nucleophile oncematī (E) leaving group concentration [15]. Which statement is true about the result in oxymercurstion-reduction reaction 7 (A) Markovnikov addition of HO (B) Markovnikov addition of H, (C) Anti-Markovlkow (D) Anti-Markovnikov addition of H (E) none of the shove addition ef HO [16]. The reagent to convert eyclohexene to trans-cycl ch...
Which of the following addition reactions are stereospecific? (a) Cl2 addition to a disubstituted alkene (b) HBr addition to a trisubstituted alkene (c) Radical addition of Cl2 to CH4 (d) Oxidation of a trisubstituted alkenes by using O3, Zn and H2O (e) Two of the above
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