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24. Which compound most likely matches the following 1H NMR spectrum? 3H 2H (A) Br (B)...
Which compound matches the following 1H NMR spectrum? doublet, 2H singlet 3H doublet 2H br. singlet 1H 10 PPM NO2 OH OH A D OD ОА OC B
Which compound matches the following 1H NMR spectrum? singlet 3H singlet 3H PPM A. B. i. C D. ОН H Ос B OD ОА
Which compound matches the spectrum shown? 3H, 4H 3H,t 2H, a 8 6 PPM 2 "onora Moving to another question will save this response. Question 44 Which structure does not produce a racemic mixture when reduced with excess LAH? (A) (B) (C) ||| (D) (E) V question will save this response. Question 45 How many signals are expected in the C-NMR spectrum for the product of the reaction? 1. LAH 2. H20 Number of 13C NMR signals expected for product?...
Which compound matches the following 'H NMR spectrum? singlet ЗН singlet ЗН PPM B C Sco D OH H e D D) А
1H NMR 6. Propose a structure for the compound CzH.O with the following 'H NMR spectral data. 2H 1H 3H 1110 H ppm 7. Propose a structure for the compound C2H60, with the following 'H NMR spectral data. (Note this is the same molecular formula as the previous question) ppm 8. Propose a structure for the compound C,He with the following 'H NMR spectral data. SH2H 1H ppm 9. Propose a structure for the compound CxHyN with the following 'H...
21) Which of the following is not a nucleophile? A) Br B) FeBr3 C) NH3 D) - E) CH3OCH3 22) An unknown compound, C9H12, gave the following NMR spectrum: Triplet at 1.21 ppm (3H) Singlet at 2.30 ppm (3H) Quartet at 2.60 ppm (2H) Singlet at 7.04 ppm (4H) What is the structure of the compound? A CH,CH,CH, v. CHA CH; CH2CH3 СН3 V. CH CH3 CH CHCH3 СН3 CH3 A) 1 B) II C) III D) IV E) V
unknown compound, which is insoluble in water but soluble in 10% aqueous NMR spectrum. What is the compound? ielded the given sodium bicar 2 PPM OH он eThis IR spectrum is of which compound? Et 69. The ' H NMR spectrum corresponding to the product of the following cross-coupling reaction is shown. is the product? B(OH)2 Et Pd(OAc)a K CO D) 3H 3H 8H 2H ILLI PPM Br (B) Br (A) Meo Et Et (D) (C) MeO unknown compound, which...
Part A The 1H NMR spectrum of a compound which has the molecular formula c4Hao is shown below. Identify the compound. See pages 22-24 of the Chapter 13 notes. 6.45 ppm dd, J 18, 10 Hz, 1H 4.18 ppm dd, J 18, 2 Hz, 1 3.95 ppm dd, J 10, 2 Hz, 1 3.75 ppm quartet, 2H 1.30 ppm triplet, 3H
Deduce the identity of the following compound from the 1H NMR data given. C8H100:8 3.4 (3H, singlet), 4.5 (2H, singlet), 7.2 (5H, apparent singlet) (ppm) A) PhCOCH3, B) PhCH2OCH3 C) (CH3)3CCH2CHO D) PHCH2CH3 ОА OB Ос
16. Propose a structure for a molecule of formula CaHsCl which gave the following 1H NMR spectrum. PPM 17. Propose a structure for a molecule whose mass spectrum shows a parent ion at m/z 148, an IR peak at 1680 cm'and gives the following H and 13C NMR spectra 3H зн 2H 2H 2H 3 5 2 7 6 4 PPM 160 140 180 60 220 200 20 0 120 100 80 40 PPM -