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- 16 Draw the structures of Compound 16a and 16b, clearly indicate your assignments of all proton resonances. Calculate the unsaturation index of each compound Compound 16a- c8h6o2 A=10.2 ppm singlet 2h B=7.69 ppm singlet 4h Compound 16b C8H10 A=7.00 ppm, singlet 4h B= 2.25 ppm singlet 6H (Excess) H2NNH2, KOH, (HOCH2CH2)2O heatPlease show complete answer. Propose a structure consistent with following set of spectral data: a. C5H10O2: IR peak at 1740 cm−1; NMR (ppm): 1.15 (triplet, 3 H) 2.30 (quartet, 2 H) 1.25 (triplet, 3 H) 4.72 (quartet, 2 H) b. C3H6O: IR peak at 1730 cm−1; NMR (ppm): 1.11 (triplet) 2.46 (multiplet) 9.79 (triplet)Draw the structures of Compound 13 a and 13b, clearly indicate your assignments of all proton resonances. Calculate the unsaturation index of each compound Compound 13a: C8H10O2 A=7.17 ppm singlet 4h B=4.70 ppm singlet 4h C= 2.99 ppm singlet 2H 1)Excess CrO3, H2SO4 2) CH3OH (excess) , H+ heat Compound: C10H10O4 A=8.11 ppm singlet 4H B=3.96 ppm singlet 6 H
- The molecular formula of an unknown compound is C7H13BrO2, The strong peak at 1750 cm^-1 The proton NMR data is, 1.2d(6H, d), 4.2d(1H, t), 2.2d(2H, quintet), 4.93d(1H, septet),1.08d(3H,t).What is the name of the unknown compound? Isopropyl 2-bromobutanoate 1-bromopropyl isobutyrate ethyl 2-bromo-3-methylbutanoate 1-bromoethyl 3-methylbutanoateThese are the characteristics of the IR spectrum, what type of molecule is formed? can you show the drawing. Wavenumber cm -1 Bond Vibration Shape Intensity Functional group or description 3348, 3423 N-H Stretch Sharp Strong Primary amine 3042-3074 =C-H Stretch Sharp Medium Aromatic 1511 N-H Bending Sharp Strong Amine 1236 C-O Stretch Sharp Strong Ether 827 =C-H Bending Sharp Strong AromaticThe proton nmr is 1H Septet between 3.5 and 4 3H singlet at about 3.4 6H doublet at about 1.2
- The 1H NMR spectrum of 1-bromo-2-methylpropane would be expected to have a.) singlet (9H) , doublet (1H) b.) doublet (6H), multiplet (1H), doublet (2H) c.) quartet (2H), triplet (3H), singlet (2H) d.) multiplet (6H), doublet (2H), singlet (1H)Acid chlorides (RCOCl) constitute another family of compounds that contains a carbonyl group. Would you expect the C=O of an acid chloride to absorb at a higher or lower wavenumber than an ester? Explain your reasoning. We will learn more about acid chlorides in Chapter 20.Propose a structure consistent with following set of spectral data: C3H6O: IR peak at 1730 cm−1; NMR (ppm): 1.11 (triplet) 2.46 (multiplet) 9.79 (triplet)
- Propose a structure consistent with following set of spectral data: C3H6Br2: IR peak at 3000–2850 cm−1; NMR (ppm): 2.4 (quintet) 3.5 (triplet)Propose a structure consistent with each set of spectral data: a. C4H8Br2: IR peak at 3000–2850 cm−1; NMR (ppm): 1.87 (singlet, 6 H) 3.86 (singlet, 2 H) b.C3H6Br2: IR peak at 3000–2850 cm−1; NMR (ppm): 2.4 (quintet) 3.5 (triplet) c. C5H10O2: IR peak at 1740 cm−1; NMR (ppm): 1.15 (triplet, 3 H) 2.30 (quartet, 2 H) 1.25 (triplet, 3 H) 4.72 (quartet, 2 H) d.C3H6O: IR peak at 1730 cm−1; NMR (ppm): 1.11 (triplet) 2.46 (multiplet) 9.79 (triplet)Propose a structure consistent with each set of spectral data: a.C6H14O: IR peak at 3600−3200 cm−1; NMR (ppm): 0.8 (triplet, 6 H) 1.5 (quartet, 4 H) 1.0 (singlet, 3 H) 1.6 (singlet, 1 H) b.C6H14O: IR peak at 3000−2850 cm−1; NMR (ppm): 1.10 (doublet, relative area = 6) 3.60 (septet, relative area = 1)