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Sul B Sx2 Either Syl or S2 None of these D) 103) What substitution reaction mechanism...
Which statement or set of conditions listed below is not consistent with an Syl reaction pathway?...
Which statement or set of conditions listed below is not consistent with an Syl reaction pathway? O a. Neutral nucleophile work just fine. b. The leaving group is typically the conjugate base of a strong acid. O c. The rate is not dependent upon the concentration of the nucleophile. d. The temperature is relatively "cooler" to reduce competing elimination products. e. The solvent is polar and aprotic. Of. The substrate has a leaving group that is typically on a 30,...
Chem 2010 Substitution Problem Set Name 1. Choose the appropriate answer for each of the following...
Chem 2010 Substitution Problem Set Name 1. Choose the appropriate answer for each of the following (circle your answer): the strongest base: i c F the strongest acid: CHOH H20 NH3 the worst nucleophile in protic, polar solvents: 1 F the slowest in an SN2 reaction: (CH3)2CHCH2Br CHI CH3CH2CH2Br the best solvent for an Snl reaction: acetone water pentane the worst nucleophile: OH "Сн, NH the strongest base NH H20 F the best nucleophile: OH CH3 NH the best solvent...
5. (4 points) Draw the configuration(s) of the substitution product(s) that will be formed from the...
5. (4 points) Draw the configuration(s) of the substitution product(s) that will be formed from the following reactions. (Hint: decide if the substitution will follow an Snl or Sn2 mechanism first.) CH2CH2CH3 will + NH3 H2C polar, aprotic solvent H.CL Br + CH 0 CH3 + CH,OH CH + CH OH Br 6. (3 points) Which of the following reactions will go faster if the concentration of the nuclcophilc is increase? Explain. H HECOH Br + CH20- + Br Br...
Ans: D Topic: Generalities, solvent effects Section: 6.13 Difficulty Level: Easy 50) Consider an Sy2 reaction...
Ans: D Topic: Generalities, solvent effects Section: 6.13 Difficulty Level: Easy 50) Consider an Sy2 reaction of NaSH in a polar aprotic solvent with (CH),CHCH CH2X. What would be the relative order of reactivity for the following X substituents? LX-1 L. XBr III. X CI IV X = F a)I> II>III> IV b) II>1> IV> IIl c) IV > III> II>I d) III>1> II> IV e) None of these choices Topic: Generalities, solvent effects Section: 6.13 Difficulty Level: Easy 51)...
17. Which of the following statements is true? A. An Sw1 reaction always proceeds faster than...
17. Which of the following statements is true? A. An Sw1 reaction always proceeds faster than an S2 reaction. B. An Sw2 reaction is not stereospecific C. Good alkyl halide substrates for an E1 reaction are also good for an E2 reaction. D. Increasing the alkyl halide concentration enhances the reaction rate of an Sw1 reaction but not that of an E2 reaction. 18. For the following reaction, what happens to the reaction rate if the concentration of NaN, is...
C. Indicate which is the late-detemning step. d. Is it the same mechanism as in question...
C. Indicate which is the late-detemning step. d. Is it the same mechanism as in question 1? Why or why not? 3. Explain why El and Sx1 mechanisms follow first order reaction kinetics, whereas E2 and SN2 mechanisms follow second order reaction kinetics. 4. Which is the better nucleophile in a protic solvent: chloride ion or bromide ion? Try to explain this in terms of the nature of the chloride ion and the bromide ion. 5. For the synthesis of...
help pleaseee What is the systematic IUPAC name for the following Organic compound? OH a. 2-Ethyl-1,7-dioxodecan-1-ol...
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What is the systematic IUPAC name for the following Organic compound? OH a. 2-Ethyl-1,7-dioxodecan-1-ol b.2-Ethyl-7-oxodecanoic acid c. 9-Ethyl-4-oxodecanoic acid d. 1-Hydroxydecan-1,7-dione e. 3-Carboxy-8-oxoundecane f. 9-Ethyl-4-oxodecanal Which mechanism(s) listed below generally proceed(s) smoothly when a low concentration of neutral nucleophile/base is used in the presence of a polar protic solvent? a. SN2 b. Sn2 and 2 c. Snl and E1 d. SNI e. El 1. E
CIC-CH.CH $$ 0,09 ( -CCHCH, K CANON D) IV 2, whicen er falowing the A) B)...
CIC-CH.CH $$ 0,09 ( -CCHCH, K CANON D) IV 2, whicen er falowing the A) B) II CITI 21) Which of the following alkenes is the most stable? or more com B) II D) IV 22) For the following reaction, use the identity of the alkyl halide and nucleophile to determine which substitution mechanism occurs. Then determine which solvent affords the faster reaction. OH + BO • ное но A) SN 2, H20 B DMF ) SN1, H20 SN1, DMF...
* Incorrect. Choose all of the correct products of the following substitution reaction. MeOH,H,O (d) CH3...
* Incorrect. Choose all of the correct products of the following substitution reaction. MeOH,H,O (d) CH3 ОСНа OH Your answer is partially correct. Try again. of the substitution reactions, which ones are Sn2? The Sn2 reaction product proceed with inversion of configuration 19 (number) products. The Sn1 reaction yields This is because The carbocation that forms can react with either nucleophile (H20 or CH3OH) from the top side of the molecule. The carbocation that forms can react with H2O from...
Consider the SN2 reaction of butyl bromide with hydroxide ion , Assuming no other changes, what...
Consider the SN2 reaction of butyl bromide with hydroxide ion , Assuming no other changes, what effect on the reaction rate would result from simultaneously doubling the concentrations of both butyl bromide and hydroxyl ion No effect (B)It would double the rate (C)it would increase the rate six times (D) It would increase the rate four times. 2. Which alky halide would you expect to undergo SN1 hydrolysis most rapidly? (A) (CH3)3C-I (B) (CH3)3C-Br (C) (CH3)3C-Cl (D) (CH3)3C-F 3....
Which statement or set of conditions listed below is not consistent with an Syl reaction pathway? O a. Neutral nucleophile work just fine. b. The leaving group is typically the conjugate base of a strong acid. O c. The rate is not dependent upon the concentration of the nucleophile. d. The temperature is relatively "cooler" to reduce competing elimination products. e. The solvent is polar and aprotic. Of. The substrate has a leaving group that is typically on a 30,...
Chem 2010 Substitution Problem Set Name 1. Choose the appropriate answer for each of the following (circle your answer): the strongest base: i c F the strongest acid: CHOH H20 NH3 the worst nucleophile in protic, polar solvents: 1 F the slowest in an SN2 reaction: (CH3)2CHCH2Br CHI CH3CH2CH2Br the best solvent for an Snl reaction: acetone water pentane the worst nucleophile: OH "Сн, NH the strongest base NH H20 F the best nucleophile: OH CH3 NH the best solvent...
5. (4 points) Draw the configuration(s) of the substitution product(s) that will be formed from the following reactions. (Hint: decide if the substitution will follow an Snl or Sn2 mechanism first.) CH2CH2CH3 will + NH3 H2C polar, aprotic solvent H.CL Br + CH 0 CH3 + CH,OH CH + CH OH Br 6. (3 points) Which of the following reactions will go faster if the concentration of the nuclcophilc is increase? Explain. H HECOH Br + CH20- + Br Br...
Ans: D Topic: Generalities, solvent effects Section: 6.13 Difficulty Level: Easy 50) Consider an Sy2 reaction of NaSH in a polar aprotic solvent with (CH),CHCH CH2X. What would be the relative order of reactivity for the following X substituents? LX-1 L. XBr III. X CI IV X = F a)I> II>III> IV b) II>1> IV> IIl c) IV > III> II>I d) III>1> II> IV e) None of these choices Topic: Generalities, solvent effects Section: 6.13 Difficulty Level: Easy 51)...
17. Which of the following statements is true? A. An Sw1 reaction always proceeds faster than an S2 reaction. B. An Sw2 reaction is not stereospecific C. Good alkyl halide substrates for an E1 reaction are also good for an E2 reaction. D. Increasing the alkyl halide concentration enhances the reaction rate of an Sw1 reaction but not that of an E2 reaction. 18. For the following reaction, what happens to the reaction rate if the concentration of NaN, is...
C. Indicate which is the late-detemning step. d. Is it the same mechanism as in question 1? Why or why not? 3. Explain why El and Sx1 mechanisms follow first order reaction kinetics, whereas E2 and SN2 mechanisms follow second order reaction kinetics. 4. Which is the better nucleophile in a protic solvent: chloride ion or bromide ion? Try to explain this in terms of the nature of the chloride ion and the bromide ion. 5. For the synthesis of...
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What is the systematic IUPAC name for the following Organic compound? OH a. 2-Ethyl-1,7-dioxodecan-1-ol b.2-Ethyl-7-oxodecanoic acid c. 9-Ethyl-4-oxodecanoic acid d. 1-Hydroxydecan-1,7-dione e. 3-Carboxy-8-oxoundecane f. 9-Ethyl-4-oxodecanal Which mechanism(s) listed below generally proceed(s) smoothly when a low concentration of neutral nucleophile/base is used in the presence of a polar protic solvent? a. SN2 b. Sn2 and 2 c. Snl and E1 d. SNI e. El 1. E
CIC-CH.CH $$ 0,09 ( -CCHCH, K CANON D) IV 2, whicen er falowing the A) B) II CITI 21) Which of the following alkenes is the most stable? or more com B) II D) IV 22) For the following reaction, use the identity of the alkyl halide and nucleophile to determine which substitution mechanism occurs. Then determine which solvent affords the faster reaction. OH + BO • ное но A) SN 2, H20 B DMF ) SN1, H20 SN1, DMF...
* Incorrect. Choose all of the correct products of the following substitution reaction. MeOH,H,O (d) CH3 ОСНа OH Your answer is partially correct. Try again. of the substitution reactions, which ones are Sn2? The Sn2 reaction product proceed with inversion of configuration 19 (number) products. The Sn1 reaction yields This is because The carbocation that forms can react with either nucleophile (H20 or CH3OH) from the top side of the molecule. The carbocation that forms can react with H2O from...
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