Q3: Provide a FMO analysis and the WH Rule exemplification of the [3.3] sigmatropic shift shown below by carefully drawing the chair TS involved H3C. H3C H3C H3C"
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![Q3:
Provide a FMO analysis and the WH Rule exemplification of the [3.3] sigmatropic shift shown
below by carefully drawing the chair TS involved
H3C.
H3C
H3C
H3C"](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1a40de24-47b6-4482-9ad2-a61ce4e71084%2Ff1a362d1-7870-433b-83d7-79e5a7da46aa%2F3wrf3r6_processed.png&w=3840&q=75)
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- Q2: Choose the correct answer for each of the following: () 1 - In the infrared spectrum of a Compound containing a triple C-C bond, the amplitude oscillation band appears The Stretch) has at: - A) 2700 cm ¹ b) 2100 cm ¹ -1 c) 3100 cm ¹ 2- Stretching frequency of the O=C bond of a compound (3-butene-2-on) is less than the stretching frequency of a compound (2-propanone) a.) hydrogen bonding c) Vibration duplication b) Electronic effects 3- The compound o-hydroxybenzoic acid can be distinguished from the compound m-hydroxybenzoic Acid by infrared spectroscopy based on: a) OH. Group b) group curve oscillation) C-H c) group amplitude oscillation C=Oorganic chemistry II please label the important peaks for me and explain whyQ3: H3C. Provide a FMO analysis and the WH Rule exemplification of the [3.3] sigmatropic shift shown below by carefully drawing the chair TS involved. (12 points) H3C H3C H₂C\..
- Estimate the chemical shifts on the following hydrogens. H (CH3)3C. H CH3- (a) (b) H C(CH3)3 CH₂ (d) CH3-C-C=C-H | OH (e) CH₂ CH₂ CH₂CH₂-C-OH CH₂ H o CH₂1:23 10) Match each molecule with its IR spectrum. Explain your choice by detailing (specifically addressing the location, intensity, and breadth of important peaks) the important differences in the following specific regions of the spectrum. 100 TRANSHETTANCES D 100 TRANSHE CANCES 4000 D 4000 3000 Photo 3000 2000 2000 a. The C-C stretching region b. The C-H stretching region H₂C=CH-CH=CH-CH=CH₂ HAVENUMBER "M 1500 RAVENUMBER 1500 1000 500 + Done 500 OFill in the blanks: (a) to (i): Determine whether each stereocenter marked by letters in red is R or S: H,N CI F CI SH a b SH Br Br CI 1(a). 2(b). 3(c). 4(d). 5(е). 6(f). 7(g). 8(h). 9(1).
- Which of the following groups has the highest priority for assigning R-S absolute configuration? a. CH₂=CH- b. (CH3)₂CH-*c. (CH3)3C- d. CH₂CH₂- Type here to search Bl Mar... e. CH₂- 4 Zvate Windows ^) ENG ص 01:20 T-T/-1/-0 EA4 Compound: C11H18O4 For 1H and 13 C:1. Specificy the chemical shifts and multiplicity2. Specify the number of hydrogens or carbon associated for each peak in 1H and 13C spectra.3. Assigned the peaks in the proposed structure.1) Indicate chemically equivalent nuclei (e.g. Ha, H³, Hc). 2) Estimate the chemical shifts on the following hydrogens. 3) Indicate the ratio of the area under the peaks 4) Indicate the Spin Spin splitting (singlet, doublet, triplet, etc) 1, 1, 2 tribromoethane Ethyl benzene Methyl isopropyl ketone Isopropyl propionate
- 2. (2) In proton NMR, hydrogens with environments which have the lowest electron density are found a) upfield c) downfield b) are unobservable d) can be anywhere in the spectrum 3. (1) How many signals (peaks) are found for the H atom on the tertiary carbon of 2-methylpropane, due to spin-spin splitting? a) 1 b) 2 c) 4 d) 8 e) 106. For each of the following molecules: i) Fill in all the C-H bonds; ii) Then identify FOUR unlque stretching frequencies that will appear in the IR spectrum in the region 1600-4000 cm ; and prediet the position (cm-1), shape and intensity of each band. a) C=C-C-H ON b) CミC-C--c と- c-と-CEN c)204hw1-1 0021.pdf CCOB 124% 1. a) Consider this compound: ch -Br b) How many signals would this compound give in the 'NMR? You may group aromatic hydrogens together as one signal. cture above, label the different types of H'S as In table form, list the peaks, the number of On the st c) А, В, с, etc. hydrogens, their shifts, and the splitting you would observe in the 'NMR spectrum of this compound, for example: # of hydrogens Shift (6) -2.0 splitting singlet Label 3 etc. 23 ?S ? tv
