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- III Jdve this response. estion 13 8. Determine the priority of the groups and hence the absolution configuration of the stereocentre in this co Br vThe highest priority group is A. Br v The second highest priority group is B.COCH3 C.S v The configuration is D.C6H5 E. R will save this response.l Zain JO 4G 5:01 PM © 74% A exams.zuj.edu.jo Marked out of 2.00 P Flag question Time left 0:59:50 How many enantiomer does the following compound has? СНО H ОН H HO- ОН H- ОН CH,OH Оа. 15 O b. 4 Ос. 1 O d. 72. Predict the product or provide the reagent for the reactions below. Each reaction highlights an additional method for preparation of the same functional group. a. Fukuyama, JACS, 2005, 127, 15038 b. MeO. Br TMSO. NO₂ i 1. Fe, HCI 2. O CF3 CF₁ TMSO. OEt
- 2 The dipole moment of 1,2 -dibromobenzene [Structure 1jund 1,3 dibeomubemene [structure 2] is and_respectively. ĮGiven cos 60-05 and cos 120-0 12 a 242 D14D b. 13D, 206 D e. 15D:29D d. 3.5 D35D 3 Choose the correct option from the following a. lodination of acetone is a specific hydrogen ion catalysis in the pesence I b. lodination of acetone is a general acid catalysis in the presence HCI e. Rate -k(HI(1] d. lodination of acetone neither hydrogen ion or general acid catalysis Mean ionic activity coefficient (y of 0.001 M NaSO, is a. 0201 b. 0382 e. 0.679 d. O879 . The rate of reaction increases with temperature due to a. Decrease in activation energy b. Increase in activation onergy e. Increase in collision frequency d. Increase in concentrationSelect the correct configurational descriptor for the following: HO.,, H, CH3 II H. HO © GMU 2020 B. R C. cis D. trans E. E F. S10. Classify each whether it is symmetrical or unsymmetrical anhydride. (CH3-CO)20 а. b. H,C CH (CICH2-CO)20 (CH3-CH2-CH2-CH2-CH2-C0)20 С. d. е.
- 5. Designate homotopic, enantiotopic, or diastereotopic for the hydrogens present in the molecules below. H H Ph H. H i. ii. iii. H ОН OH OH iv. H H. H H, V.Which structure is consistent with this 'H NMR spectrum? (1.2 ppm, triplet, 3H); (1.9 ppm, singlet, 3H); (4.2 ppm, quartet, 2H) A. H3C С. но D. C. B.nurbuks alixir 9 and lead). solution of ammonium chloride ) (~Hyl) acetate (Pb(CH3006) ₂ This solid? produces a solid. What is the identity of Bott A. Pb (CH₂COO), B. Pb (NH4)₂ C. (NH4), 4 D) Pb C (W) J Ẹ NH, CH, Coo Expl 49 42-0 CO C-PF St LGO (23 21 HO SA R الموت id boke slit + CXIC moth SHMOB stata G
- Assign a priority order (from least to highest priority) to each of the folliowing sets of groups: I. -CH(CH3)2 II. -CH3 III. -H IV. -NH2 A. III, IV, II, I B. IV, I, III, II C. III, II, IV, I D. III, II, I, IV25. ? (3,3.sigmatropic RR.) CHO 3. B. e. A. CHO OCHy Bonus ? (firal product) A. В. C.16. Select the most appropriate set NaOH, H20 of reactants to afford the following major organic product: 335 K of + A В D 17. Select the appropriate structure for glutamic acid at pH = 2. %3D A B НО HO, HO. NH3 NH2 + D NH3 NH2 18. Select the molecules that exhibit aromaticity NH2 НО 1 2 4 а. 1 b. 1 and 4 С. 1 and 3 d. 2 and 3 На Hc 19. The abstraction of which labeled hydrogen from the naturally-occurring amino acid tryptophan will result in `N' Hb the most stable radical intermediate? Hd of