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- PQ-17. What is the major product of this reaction? (A) H3CO њсоян (B) OH OH (C) OH O H OH OH 1) CH,MgBr (1 eq.) 2) NHÀ -OH (D) онянNO2 Propose an efficient synthesis NH2 NH29a) The proton bonded to the carbon adjacent to the carbonyl group in the following compound can be classified into which chemical shift in the ¹H-NMR spectra of aldehydes and ketones? R or H H - 10.0-12.0 ppm R H -2.0-3.0 ppm NO₂ N (1) 9b) Choose the one below that could be resolved into enantiomers. (1) alpha hydrogens = ? ppm NO₂ NO₂ 9c) Which of the following is the major product of the reaction below. `N H -5.0-7.0 ppm (11) (11) -0.0-1.0 ppm HNO3, H₂SO4 H NO₂ (III) NO₂ (1) and (II) (IV) None of the options (IV)
- Provide an arrow pushing mechanism for the following reaction. Include protons and each step clearly indicated. Ph Ph H* H3C CH3 HyN-NH -Me MeDescribe the preparation of the following. Pls help answer a-c onlyA compound (C3H,NO) gives the following NMR data. In the box below please draw the structure of the compound. 'H-NMR: 2.06 ppm, s(3H); 7.01 ppm, t(1H); 7.30 ppm, m(2H); 7.59 ppm, d(2H); 9.90 ppm, s(1H) 13C-NMR: 168.14; 139.24; 128.511; 122.834; 118.90; 23.93 • You do not have to consider stereochemistry. You do not have to explicitly draw H atoms. Do not include lone pairs in your answer. They will not be considered in the grading.
- PQ-23. What are the major products of this reaction? (A) i 18ОН ОН > (B) (D) 180 i Å CH 3 + NaOH (aq) 18ОН OHProvide a detailed electron pushing mechanism describing the following conversion HCI MeOH Br2 NaOH O:5) Please show the pKa numbers for the conjugate acid of each compound /ion. As best as you can, arrange the following ions in order of a) increasing leaving group, b) increasing nucleophilicity. A B C OH D E