6. Which of the following alkenes is most likely to undergo rearrangement upon acid-catalyzed hydration (treatment...
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...
acid catalyzed hydration of 1 methylcyclohexene yields 2 alcohols. The major product does not undergo oxidation, while the minor product will undergo oxidation, explain. 3. Acid-catalyzed hydration of 1-methylcyclohexene yields two alcohols. The major product does not undergo oxidation, while the minor product will undergo oxidation. Explain. 4. Using 2-propanol as your only source of carbon, show how you would prepare 2-methyl- 2-pentanol. 5. Identify the reagents you would use to accomplish each of the following transformations: DH (4) tage...
10. Which of the following cations is most likely to undergo rearrangement? Is the rearrangement a methyl shift or hydride shift? A. O L c. Yo Do
6. Which of the following carbocations would NOT be likely to undergo rearrangement? A) CH3CHCHCH3 CH3 CH3 B) CH3CHOCH3 CH3 CH C) CH3CCH2 CH3 D) CH3 CH3CHCH2 E) CH3 CH3CCHCH2CH3 CH3 7. Which alcohol would initially produce the most stable carbocation when treated with concentrated H2SO4? A) CH3 CH3CCH2 CH3 он CH3 B) CH3CHCHCH3 он CH3 C) CH3CHCH2CH2OH CH3 D) HOCH2 CHCH2CH3 E) CH2 OH CH3CHCH2CH3 Page 4
Question 24 Which alkene(s) can undergo acid-catalyzed hydration to give the following product? OH only only
D) Br 6. Which of the following alkyl bromides is likely to undergo rearrangement by a 1, 2-methyl shift during an Sy1 or El reaction (both reaction mechanisms form a carbocation)? A) benzylł bromide B) 2 -bromo 3-ethytpentane C) 3-bromo-3-methylpentane D) 2-bromo-3, 3-dimethylpentane r is untrue about the rate of an E2 elimination of an alky
Question 9 (2 points) Which of the following carbocations is (are) likely to undergo rearrangement through a methyl shift? HC CH HC CH H₃C. CH INI a) both I and II b) both II and III OI d) 1 Question 10 (2 points) Choose a major product for the reaction below 0 Cl/AICI OCH, CI OCH OCH OCH a) I, II and Ill b) d)
4. Which of the following carbocations would be likely to undergo rearrangement? A) CH3-CH-CH-CH3 CH3 CH3 B) CH3-CH-?_CH3 CH3 CH3 C) CH3-C-CH2-CH3 D) More than one of the above E) All of the above t he dehydrated to an al
Reaction Coordinate D)2 03 is incorrect Which of the following statment about thens A) All of the hydrogen atoms are in the same plane R) There is a total of five siga hands. The H-C-H hond angles are approximately 109.5" D) The carbon atoms are sp2 hybridized The H-C-H band angles are approximately 120". Which of the following has two equatorial alkyl substituents in its most stable conformation A) 1,2-dimethylcyclohexane B) -1,3-diethylcyclohen 13-diethylcyclohexane D -1,4-diethyleyelo n e E) LI-dimethylcyclohexane 7)...
Which of the following alkyl halides is likely to undergo rearrangement by a 1, 2- methyl shift? A) 3-bromo-3-methylpentane B) 2-chloro-3, 3-dimethylpentane C) 3-bromo-2, 3-dimethylpentane D) 2-iodo-2-methylpentane Which of the following alkyl halides is the worst substrate for the Sn2 reaction? A) Br B) Br C) Br D) Br In the mechanism for the reaction shown below, the first curved arrow moves from_ to Н. CH3CH2NH2 H3C + CH3 A) carbon (in CH3CH2NH2) to oxygen B) oxygen to nitrogen C)...