29. In each compound below, two protons are clearly identified. Determine which of the two protons is more acidic. Choose A or B. (12 = 4 x 3 points) a) (B) b) H (A) HO (A) c) SH (B) (A) (B)
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- Carvone is an unsaturated ketone responsible for the odor of spearmint. If carvone has M+=150 in its mass spectrum and contains three double bonds and one ring, what is its molecular formula?5] Ibuprofen is a NSAID (non-steroidal anti-inflammatory drug), that can be used to alleviate pain. How many correlations would you expect to see in its H,H-COSY spectrum?¸ CH3 CH3 OH com H3C IbuprofenHow many different types of protons are present in each compound? (CH3)3CH 2. CH3CH2OCH2CH2CH2CH2CH3
- 15. Rank the following compounds in order of increasing Ka. The first compound in your ranking shou the lowest Ka. H H H CH 2 H3 H (a) 1<2<3 (b) 3 <2<1 (c)2<1<3 (d)3Which of the following anions is the most stable? (A) (B) مع (C) (D) 006) The NMR spectrum of this dimethyl ether is complicated, but the diphenol has a very simple NMR: there are only two types of protons on the rings (marked a and b). Explain. OMe 0 a b OH a OMe dimethyl ether Он diphenol bHow many non-equivalent ("different" kinds of) protons are there in this compound? CH3 Br CH 3Determine the number of different kinds of protons in each compound. 2,2-dimethylbutaneThe first resonance structure of acetamide, CH3 CONH2, is shown. H :0: ☐ || H-C-C-N-H H H Determine the correct second resonance structure of acetamide. H :0: -1 +1 H-C-C-N-H H H H :0: -1 ☐ ☐ H-C=C-N-H H H H :0: H-C-N-C-H HH ●● -1 H:0: H H-C-C=N—H H HLabel the protons in red as homotopic, enantiotopic, or diastereotopic. H3N CO₂ H OH OH HH HO₂C SH CH3(i) how many bonds does the molecule have? (ii) how many unhybridized p-orbitals total does the carbon labeled (b) have? (iii) how many unhybridized p-orbitals total does the carbon labeled (a) have? H-CEC-N (a) c=c=Ö: (b) H H3. Consider the isomers A, B and C given below: CH3 CH3 CH3 Br в A Br Br 3-Bromomethylbenzene 4-Bromomethylbenzene 2-Bromomethylbenzene (c) For each compound how many chemically different carbon signals would you expect to see in their 1°C NMR spectra? B = C = A =SEE MORE QUESTIONS