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Question 29 (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...
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....
Which one of the following dienophiles is most reactive in the Diels-Alder reaction? Group of answer...
Which one of the following dienophiles is most reactive in the Diels-Alder reaction? Group of answer choices: trans-1-methoxy propene propyne 1,4-cyclohexadiene trans-2-butene maleic anhydride
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 27 (2 points) Predict the reactants for the following Diels-Alder product: OB 0: ES ot...
Question 27 (2 points) Predict the reactants for the following Diels-Alder product: OB 0: ES ot O a) IV Ob) 11 Oc) d) III Question 28 (2 points) What are the expected major products of the reaction sequence shown below? 1. O3 2. H2O OH & O O=C=0 OH 11 IV V - a) I and IV Ob) II, III and IV O c) I and II d) I, III and IV
Question 14 (2 points) Which of the following compounds is the most reactive dienophile in a...
Question 14 (2 points) Which of the following compounds is the most reactive dienophile in a Diels- Alder reaction? соосн, NO2 соосн соосн. OB) II OD) IV
Question 15 (2 points) Which of the following are possible products of the reaction shown? hv...
Question 15 (2 points) Which of the following are possible products of the reaction shown? hv NBS Br Br IV Oa) I, II and III ob) I and II Oc) I, II, III and IV od) 1, III and IV Question 16 (2 points) Guess the structure of the compound using your understanding of chemical shifts. 2H PP انه IV oa) III ob) 1 oc) IV od) 11
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...
Question 6 2 pts Which of the following cannot be a diene in the Diels-Alder reaction?...
Question 6 2 pts Which of the following cannot be a diene in the Diels-Alder reaction? ooooo III IV Il & IV O I&IV Only II Only IV Only! Only III II & III All the M.O.s of 1,3-butadiene are shown below. Which picture represents the Photochemically excited HOMO? 888 IV O IV O II
Q3. Which of the following alkenes would you expect to be good Diels-Alder dienophiles? Br
Q3. Which of the following alkenes would you expect to be good Diels-Alder dienophiles? Br
Question 21 (2 points) Which of the following dienes can undergo the Diels-Alder reaction? III IV...
Question 21 (2 points) Which of the following dienes can undergo the Diels-Alder reaction? III IV Oa) III ob) 11 Oc) od) IV Question 22 (2 points) Predict the product(s) of the following reaction. нег ROOR Oa) HBr addition at the alkene position following Markonikov's rule Ob) HBr addition at the alkene position following Anti-Markonikov's rule Oc) H20 addition at the alkene position following Anti-Markonikov's rule od) H20 addition at the alkene position following Markonikov's rule
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....
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 27 (2 points) Predict the reactants for the following Diels-Alder product: OB 0: ES ot O a) IV Ob) 11 Oc) d) III Question 28 (2 points) What are the expected major products of the reaction sequence shown below? 1. O3 2. H2O OH & O O=C=0 OH 11 IV V - a) I and IV Ob) II, III and IV O c) I and II d) I, III and IV
Question 14 (2 points) Which of the following compounds is the most reactive dienophile in a Diels- Alder reaction? соосн, NO2 соосн соосн. OB) II OD) IV
Question 15 (2 points) Which of the following are possible products of the reaction shown? hv NBS Br Br IV Oa) I, II and III ob) I and II Oc) I, II, III and IV od) 1, III and IV Question 16 (2 points) Guess the structure of the compound using your understanding of chemical shifts. 2H PP انه IV oa) III ob) 1 oc) IV 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...
Question 6 2 pts Which of the following cannot be a diene in the Diels-Alder reaction? ooooo III IV Il & IV O I&IV Only II Only IV Only! Only III II & III All the M.O.s of 1,3-butadiene are shown below. Which picture represents the Photochemically excited HOMO? 888 IV O IV O II
Q3. Which of the following alkenes would you expect to be good Diels-Alder dienophiles? Br
Question 21 (2 points) Which of the following dienes can undergo the Diels-Alder reaction? III IV Oa) III ob) 11 Oc) od) IV Question 22 (2 points) Predict the product(s) of the following reaction. нег ROOR Oa) HBr addition at the alkene position following Markonikov's rule Ob) HBr addition at the alkene position following Anti-Markonikov's rule Oc) H20 addition at the alkene position following Anti-Markonikov's rule od) H20 addition at the alkene position following Markonikov's rule
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