A. В. С. D. 2. Which of the circled protons in the molecules below would absorb...
2. Which of the circled protons in the molecules below would absorb furthest downfield in the NMR? condone and open auto ondoren, online B-directly attached to the electronegative atom 0, but also more crowded than E
3. List the most common NMR reference. A. Water B. Methylene chloride C. Dimethyl sulfoxide D. Carbon tetrachloride E. Tetramethylsilane
Question 11 (2 points) Which of the indicated protons in the following compound would appear most downfield in the 'H NMR spectrum? III TV II a) III Oь) ІV Oc) d) II Question 12 (2 points) Provide the structure of the expected major organic product generated upon completion of the following reaction scheme (CH), CCH2CH==CH2 HBr H202 (сн.),ccн,сн. -CH2 CAJACCHIOLI (CH, CCH-CH- -CH2 cartuscanyone (CH)CCH_CH CH₂ (CH3),CCHCH IV -Сн, III a) b) c) d) IV
For each pair of species, predict which is the stronger base? 5. Он or 1. 2. or В в NH NH (a) (b) 6. Rank the following from most stable to least stable. 2. 3. 4. Нас Н-с O H -н CH H CH,сH, сн,сн CH,CH 7. Which cation would be the most stable? А. В. C. D. What is the order of increasing contribution to the resonance hybrid? 8. CF3 ÇF3 CF3 I II III
11. Which of the following dienes can undergo tem А) І В) С) D) IV E ) all of the above What is the major organic product obtained from the following reaction? 12. (co,ch, COCH 1 -0o,0M, SCO.CH A) 1 B) 2 C) 3 D) 4 13) What is the name of the following ester? C) ethoxy butanoate A) propyl ethanoate B) ethyl propanoate D) ethyl butanoate E) None of the above 14) Which of the following is propyl benzoate?...
7. Which compound below best fits the following
spectral data?
8. How many signals would you expect to see in the
broadband decoupled C^13 spectra of the following compounds?
9. If a proton gave an NMR signal at 3.2 ppm on a MHz
NMR, what would the chemical shift be of this proton (in ppm) if
the sample was run in 400 MHz NMR?
7. Which compound below best fits the following spectral data? (6 points) H-1 NMR 0.9 ppm...
Please complete for Tuesday, we will go through the questions and mark them in class. pg 156 - 4.23, 4.24, 4.26 pg 170 - 4.29, 4.31, pg 171-4.36 pg 175 - 4.59 pg 176- 4.74, 4.75, 4.80 pg 177-4.81, 4.82 pg 188- 5.1, 5.4, 5.5, 5.6, 5.11 - Using Table 5.1 pg 198-5.22, 5.25 pg 203 - 5.29 pg 206 - 5.37 pg 209 - 5.39 pg 2.14 5.61 pg 235-6.11, 6.14, 6.16 156 CHAPTER 4 Introduction to Organic Compounds...