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& Which one of the following substitution reactions will be accompanied by . a) complete racemisation?...
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...
13. Which of the following cations is the A. A B.B C.c D.D E.E 14. Given...
13. Which of the following cations is the A. A B.B C.c D.D E.E 14. Given the following substitution reaction, what would the effect be of changing the solvent from CH3OH to (CH3)2SO? CH3(CH2)sBr + NaOH - CH3(CH2),OH + Br A. The rate would increase because Sy2 reactions favor a polar aprotic solvent. B. The rate would decrease because Syl reactions favor a polar protic solvent. C. The potential change cannot be predicted. 15. Which compound is most likely to...
Sul B Sx2 Either Syl or S2 None of these D) 103) What substitution reaction mechanism...
Sul B Sx2 Either Syl or S2 None of these D) 103) What substitution reaction mechanism is most likely for the following conversion? A) SI SN2 Either Snl or S2 None of these 105) Which of the following is a strong nucleophile? OH H0 A) B) C) D) E) CH OH ΝΗ, All of these 108) Which of the following is a weakest nucleophile in a polar protic solvent? A) F B) CH Br D) E) All of these 111)...
For the following two SN2 reactions A and B, indicate which reaction occurs in the protic...
For the following two SN2 reactions A and B, indicate which reaction occurs in the protic solvent and which the aprotic solvent, AND, indicate which reactions would be faster A or B, you do NOT need to give an explanation. A CH30-*Na ~ Cor: Br: - Cho Na> ocH, CH3OH CH3O-+Na BM : CHzo "Na → M ochy CH3CN
2. For each of the chemical substitution reactions below identify the major products and whether the...
2. For each of the chemical substitution reactions below identify the major products and whether the reaction is likely an SNI or SN2. Br NaCN ethanol-water CH,OH /H,0 Nal (1 equiv) acetone CH,CH,OH 25°C 3. For each of the following compounds provide appropriate reactants and solvent systems to synthesize them by a substitution reaction. Show which type of substitution: Syl or SN2. SH
Which one of the following substituents is activating and othe-para directing in electrophilic aromatic substitution reactions?...
Which one of the following substituents is activating and othe-para directing in electrophilic aromatic substitution reactions? 1) -C1 2) -N* (CH) 3) -COH 4) Ph What is the product of the following series of reactions? ΗΝΟ, H.SO Brs FeBry ZHg) HCI ON NO, 1) CH -CH, Br ON 2) CHE CH, Er Br NO; Identify the diene and dienophile which would give the following product. NO, 1) + H.C-CHNO 3) + HỌC CHNO3 2) + CH CH-CHNO; 4) + нс...
Question 30 3.33 pt Nucleophilic substitution and elimination reactions often complete with one another. In general,...
Question 30 3.33 pt Nucleophilic substitution and elimination reactions often complete with one another. In general, which of the following would enhance the rate of the E2 reaction over the S 2 reaction? use of a weak nucleophile branching big bulky strong base use of a weak base All of the above would enhance the E2 rate. Question 31 3.33 pt What is the strongest base below? CH-1 OH-1 H2O NH3 Question 32 333
complete the following information. If needed, review and/or research nucleophilic substitution reactions in your lecture textbook....
complete the following information. If needed, review and/or research nucleophilic substitution reactions in your lecture textbook. 1. SN2 a. Name = b. How many molecules involved in slow step? c. How many steps involved in mechanism? d. List what occurs in the step(s) e. When do you have to worry about chirality? f. What type of reactants undergo SN2? g. Secondary reactants undergo SN1 & SN2. If the nucleophile is negatively charged, what solvent (polar protic or polar aprotic) will...
+ Fit to page Page view 1. (10 pts) For the following reactions: a. Label the...
+ Fit to page Page view 1. (10 pts) For the following reactions: a. Label the Nucleophile (Nu) and whether it is strong or weak b. Label the Electrophile (E) and whether it is primary, secondary, or tertiary and circle the leaving group c. Label the Solvent and whether it is polar protic or polar aprotic d. Categorize each as preferring SN1, Preferring SN2, or could do either e Draw the product of the reaction, based upon your categorization, remember...
(c) Give the product of each substitution reaction shown below and outline which type of solvent...
(c) Give the product of each substitution reaction shown below and outline which type of solvent (polar aprotic or polar protic) would be most suitable: CH3CH2CH2Br + NaCN (CH3)2CHCHI + NaCN — (CH3)3CBr + HSCH CH3 iv) (CH3)2CHOSO,CH3CH2 + HOCH(CH3)2
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...
13. Which of the following cations is the A. A B.B C.c D.D E.E 14. Given the following substitution reaction, what would the effect be of changing the solvent from CH3OH to (CH3)2SO? CH3(CH2)sBr + NaOH - CH3(CH2),OH + Br A. The rate would increase because Sy2 reactions favor a polar aprotic solvent. B. The rate would decrease because Syl reactions favor a polar protic solvent. C. The potential change cannot be predicted. 15. Which compound is most likely to...
Sul B Sx2 Either Syl or S2 None of these D) 103) What substitution reaction mechanism is most likely for the following conversion? A) SI SN2 Either Snl or S2 None of these 105) Which of the following is a strong nucleophile? OH H0 A) B) C) D) E) CH OH ΝΗ, All of these 108) Which of the following is a weakest nucleophile in a polar protic solvent? A) F B) CH Br D) E) All of these 111)...
For the following two SN2 reactions A and B, indicate which reaction occurs in the protic solvent and which the aprotic solvent, AND, indicate which reactions would be faster A or B, you do NOT need to give an explanation. A CH30-*Na ~ Cor: Br: - Cho Na> ocH, CH3OH CH3O-+Na BM : CHzo "Na → M ochy CH3CN
2. For each of the chemical substitution reactions below identify the major products and whether the reaction is likely an SNI or SN2. Br NaCN ethanol-water CH,OH /H,0 Nal (1 equiv) acetone CH,CH,OH 25°C 3. For each of the following compounds provide appropriate reactants and solvent systems to synthesize them by a substitution reaction. Show which type of substitution: Syl or SN2. SH
Which one of the following substituents is activating and othe-para directing in electrophilic aromatic substitution reactions? 1) -C1 2) -N* (CH) 3) -COH 4) Ph What is the product of the following series of reactions? ΗΝΟ, H.SO Brs FeBry ZHg) HCI ON NO, 1) CH -CH, Br ON 2) CHE CH, Er Br NO; Identify the diene and dienophile which would give the following product. NO, 1) + H.C-CHNO 3) + HỌC CHNO3 2) + CH CH-CHNO; 4) + нс...
Question 30 3.33 pt Nucleophilic substitution and elimination reactions often complete with one another. In general, which of the following would enhance the rate of the E2 reaction over the S 2 reaction? use of a weak nucleophile branching big bulky strong base use of a weak base All of the above would enhance the E2 rate. Question 31 3.33 pt What is the strongest base below? CH-1 OH-1 H2O NH3 Question 32 333
complete the following information. If needed, review and/or research nucleophilic substitution reactions in your lecture textbook. 1. SN2 a. Name = b. How many molecules involved in slow step? c. How many steps involved in mechanism? d. List what occurs in the step(s) e. When do you have to worry about chirality? f. What type of reactants undergo SN2? g. Secondary reactants undergo SN1 & SN2. If the nucleophile is negatively charged, what solvent (polar protic or polar aprotic) will...
+ Fit to page Page view 1. (10 pts) For the following reactions: a. Label the Nucleophile (Nu) and whether it is strong or weak b. Label the Electrophile (E) and whether it is primary, secondary, or tertiary and circle the leaving group c. Label the Solvent and whether it is polar protic or polar aprotic d. Categorize each as preferring SN1, Preferring SN2, or could do either e Draw the product of the reaction, based upon your categorization, remember...
(c) Give the product of each substitution reaction shown below and outline which type of solvent (polar aprotic or polar protic) would be most suitable: CH3CH2CH2Br + NaCN (CH3)2CHCHI + NaCN — (CH3)3CBr + HSCH CH3 iv) (CH3)2CHOSO,CH3CH2 + HOCH(CH3)2
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