Homework Answers
21) option a
Only diene III can undergo diels alder reaction. Option 1 and 2 are not conjugated diene hence cannot be used in diels alder reaction. Option 4 is not a cis diene, as it is mandatory that diene should be in the cis form to undergo diels alder reaction
22) option b
HBr addition at the alkene position following ant markonikov's rule
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Question 21 (2 points) Which of the following dienes can undergo the Diels-Alder reaction? III IV...
Question 7 (2 points) Which of the following dienes can undergo the Diels-Alder reaction? II III...
Question 7 (2 points) Which of the following dienes can undergo the Diels-Alder reaction? II III IV a) 11 Ob) III Oc) Od IV Question 8 (2 points) How would you use 'H NMR spectroscopy to distinguish between the following compounds based on the benzene ring protons? II O O a) Benzene protons for I show up between 6.0 - 7.0 ppm and Il between 7.0 - 8.0 ppm Ob) Benzene protons for I show up between 7.0 - 8.0...
Which of the following dienes can undergo the Diels-Alder reaction? IV TIL = -
Which of the following dienes can undergo the Diels-Alder
reaction?
IV TIL = -
Question 11 (2 points) Identify the final product for the following reaction. 1. BH3, THE 2,...
Question 11 (2 points) Identify the final product for the following reaction. 1. BH3, THE 2, H2O2, NaOH OH ОН O 11 IV a) IV b) II c) III d) 1 Question 15 (2 points) Predict the product(s) of the following reaction. HBr ROOR a) H2O addition at the alkene position following Markonikov's rule b) HBr addition at the alkene position following Anti-Markonikov's rule c) H20 addition at the alkene position following Anti-Markonikov's rule d) HBr addition at the alkene...
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)...
Question 46 (2 points) Predict the product(s) of the following reaction. HBr ROOR a) HBr addition...
Question 46 (2 points) Predict the product(s) of the following reaction. HBr ROOR a) HBr addition at the alkene position following Markonikov's rule b) H20 addition at the alkene position following Anti-Markonikov's rule O c) HBr addition at the alkene position following Anti-Markonikov's rule d) H20 addition at the alkene position following Markonikov's rule Previous Page Nave Daca Question 47 (2 points) Which of the following are possible products of the reaction shown? hy NBS Br Br Br II III...
Question 13 (2 points) Predict the reactants for the following Diels- Alder product: OB 0: co...
Question 13 (2 points) Predict the reactants for the following Diels- Alder product: OB 0: co 0:41 oa) IV ob) Oc) III od) 11 Question 14 (2 points) Calculate the degree of unsaturation for CgH9N04. oa) 8 ob) 6 OC) 9 od) 4
Question 21 (2 points) Which one of the following dienophiles is least reactive in the Diels-Alder...
Question 21 (2 points) Which one of the following dienophiles is least reactive in the Diels-Alder reaction? OCH ОСН, Нco. IV a) b) III Oc)!! d) IV Question 22 (2 points) Which of the molecules below would be the expected product for the hydrogenation of the following alkene with Na and liq. NH3? Na NH v III IV a) Ob) II Oc) d) v Question 23 (2 points) Identify the final product for the following reaction. 1. BH3, THE 2....
I. Conjugated dienes undergo Diels-Alder reaction and form 6-membered rings. In order for this reaction to...
I. Conjugated dienes undergo Diels-Alder reaction and form 6-membered rings. In order for this reaction to occur, the diene must be in the S-cis conformation and an alkene (dienophile) preferably with an electron-withdrawing group. EWEW EW Diene S-cis conformation Dienophile racemic product Indicate which of the following compounds can function as the diene in Diels- Alder reaction and why: doo coa 10) The rates of Diels-Alder reaction of the compounds below are compare with that of 1,3butadiene. Please explain the...
I. Conjugated dienes undergo Diels-Alder reaction and form 6-membered rings. In order for this reaction to...
I. Conjugated dienes undergo Diels-Alder reaction and form 6-membered rings. In order for this reaction to occur, the diene must be in the S-cis conformation and an alkene (dienophile) preferably with an electron-withdrawing group. EW EW U +U Diene S-cis conformation Dienophile racemic product Indicate which of the following compounds can function as the diene in Diels- Alder reaction and why: Cli) The rates of Diels-Alder reaction of the compounds below are compare with that of 1,3butadiene. Please explain the...
Question 31 (2 points) What are the expected major products of the reaction sequence shown below?...
Question 31 (2 points) What are the expected major products of the reaction sequence shown below? 1. O 2. H70 OH o OH 11 III IV v Oa) I and IV ob) I and II oc) I, III and IV od) II, III and IV Question 32 (2 points) Which one of the following dienophiles is least reactive in the Diels-Alder reaction? NO, phony HCO 11 IV Oa) III ob) IV Oc) 1 od) 11
Question 7 (2 points) Which of the following dienes can undergo the Diels-Alder reaction? II III IV a) 11 Ob) III Oc) Od IV Question 8 (2 points) How would you use 'H NMR spectroscopy to distinguish between the following compounds based on the benzene ring protons? II O O a) Benzene protons for I show up between 6.0 - 7.0 ppm and Il between 7.0 - 8.0 ppm Ob) Benzene protons for I show up between 7.0 - 8.0...
Which of the following dienes can undergo the Diels-Alder
reaction?
IV TIL = -
Question 11 (2 points) Identify the final product for the following reaction. 1. BH3, THE 2, H2O2, NaOH OH ОН O 11 IV a) IV b) II c) III d) 1 Question 15 (2 points) Predict the product(s) of the following reaction. HBr ROOR a) H2O addition at the alkene position following Markonikov's rule b) HBr addition at the alkene position following Anti-Markonikov's rule c) H20 addition at the alkene position following Anti-Markonikov's rule d) HBr addition at the alkene...
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)...
Question 46 (2 points) Predict the product(s) of the following reaction. HBr ROOR a) HBr addition at the alkene position following Markonikov's rule b) H20 addition at the alkene position following Anti-Markonikov's rule O c) HBr addition at the alkene position following Anti-Markonikov's rule d) H20 addition at the alkene position following Markonikov's rule Previous Page Nave Daca Question 47 (2 points) Which of the following are possible products of the reaction shown? hy NBS Br Br Br II III...
Question 13 (2 points) Predict the reactants for the following Diels- Alder product: OB 0: co 0:41 oa) IV ob) Oc) III od) 11 Question 14 (2 points) Calculate the degree of unsaturation for CgH9N04. oa) 8 ob) 6 OC) 9 od) 4
Question 21 (2 points) Which one of the following dienophiles is least reactive in the Diels-Alder reaction? OCH ОСН, Нco. IV a) b) III Oc)!! d) IV Question 22 (2 points) Which of the molecules below would be the expected product for the hydrogenation of the following alkene with Na and liq. NH3? Na NH v III IV a) Ob) II Oc) d) v Question 23 (2 points) Identify the final product for the following reaction. 1. BH3, THE 2....
I. Conjugated dienes undergo Diels-Alder reaction and form 6-membered rings. In order for this reaction to occur, the diene must be in the S-cis conformation and an alkene (dienophile) preferably with an electron-withdrawing group. EWEW EW Diene S-cis conformation Dienophile racemic product Indicate which of the following compounds can function as the diene in Diels- Alder reaction and why: doo coa 10) The rates of Diels-Alder reaction of the compounds below are compare with that of 1,3butadiene. Please explain the...
I. Conjugated dienes undergo Diels-Alder reaction and form 6-membered rings. In order for this reaction to occur, the diene must be in the S-cis conformation and an alkene (dienophile) preferably with an electron-withdrawing group. EW EW U +U Diene S-cis conformation Dienophile racemic product Indicate which of the following compounds can function as the diene in Diels- Alder reaction and why: Cli) The rates of Diels-Alder reaction of the compounds below are compare with that of 1,3butadiene. Please explain the...
Question 31 (2 points) What are the expected major products of the reaction sequence shown below? 1. O 2. H70 OH o OH 11 III IV v Oa) I and IV ob) I and II oc) I, III and IV od) II, III and IV Question 32 (2 points) Which one of the following dienophiles is least reactive in the Diels-Alder reaction? NO, phony HCO 11 IV Oa) III ob) IV Oc) 1 od) 11
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