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which of the following can undergo keto-enol tautomerism? Question 13 (2.5 points) Which of the following...
Question 13 (2.5 points) Which of the following can undergo keto-enol tautomerism? 2-methyl-3-pentanone 3,3-dimethyl-2-butanone both a and b neither a norb Question 14 (2.5 points) What is the IUPAC name for the following carboxylic acid? 4-ethylpentanoic acid 2-propylbutanoic acid 3-carboxyhexane 2-ethylpentanoic acid
19. Which of the following can undergo keto-enol tautomerism? a. 2,4-dimethyl-3-pentanoneb. 2.2.4,4-tetramethyl-3-pentanone c, both a and b d. neither a norb 20. Which of the following compounds is a tautomer of the following compound? MOH OH OH c. both a and b d. neither a norb 21. Examine the following ball-and-stick models. Atoms other than carbon and hydrogen are labeled with the symbol of the element. How is this reaction classified? a. oxidation b. reduction c. tautormerization d. hemiacetal formation...
HW 22: Enolates 1. Provide a detailed, stepwise mechanism for the base-catalyzed enolization (keto enol tautomerism) of acetaldehyde. 2. Provide the major organic product of the folowing reaction. 3. Provide the major organic product of the following reaction LDA 4. Which of the following ketones will give a positive iodoform test? A) 4-heptanone D) cyclohexanone B) 3-hexanone C)2-hexanone 5. Provide the major organic product of the following reaction. 6. Provide the structure of the major organic product which results when...
QUESTION 1 Which of the following will not undergo an aldol condensation reaction? butanal C 2-methylbutanal C 2,2-dimethylbutanal 3,3-dimethyl-2-butanone QUESTION 2 Which of the following constitutes a difference between an aldol and a Claisen condensation? basic conditions Ctetrahedral intermediate Cenolate ion formation protonation of the intermediate QUESTION 3 The product of an aldol condensation reaction is generally favored if Can unsymmetrical ketone and aldehyde are used Can unsymmetrical ester and ketone are used Cone of the carbonyl partners contains no...
Question 2 2 pts Which of the following is (are) a keto-enol tautomeric pair(s)? 00 сусно === CHCCH, CHỊCH 11 - CHOCH, 1 HII II 01 O III O Both I and II Both I and III
I need some OChem help! Which of the following is (are) a keto-enol tautomeric pair(s)? I II III IV V Which one of the following compound does not undergo an aldol addition reaction in presence of aqueous sodium hydroxide? Butanal 2-methylbutanal 3-methylpentanal 2, 2-dimethyIbutanal Predict the major product for the following reaction. I II III IV V
6. Which one of the following carbonyl compounds has the highest percentage of enol when keto-enol equilibrium has been established? D 7. What is the major organic product that is formed from the reaction on the right? H2SO4 но 3 ОН Он ОН HO C) 3 A) 1 B) 2 D) 4
Question 3 Which of the following is a keto-enol tautomeric pair? OH OH OH and and o and COM OH I II III он OH a and a and IV CA. 1 B. V C.II D. IV E. III Question 4 What would be the major product of the following reaction sequence? он PCC 1. LDA(-78C) 2. CHCHOI ? CH C1 HO వరలో I II MI o IV A. II B. I C. V D. III E. IV
19. Which of the listed compounds can exist in equilibrium with the following compound via an enediol intermediate? он о CH,CH–C–CH,CH, ООН a. CH-C—CHCH, O b. HOCHZ-C-CH.CH OH OH C. CH, -CH=CH-CH, O 11 d. CH-C–OCH.CH CH,C-CHCH.CH 0 OH 20. b. c. d. e. 21. Assign the IUPAC name to the following compound. (CHỊ) CHCH CHO a. 3,3-dimethyl-propanal 3.3-dimethyl-butanone 3,3-dimethyl-propanol 3-methyl-butanal 3,3-dimethyl butanol Which alcohol(s) will be formed when the following is hydrolyzed? CH,CHÚCH CHOCHỊCH OCH, only methanol b. only...
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)