Package: Organic Chemistry with Connect 2-year Access Card
5th Edition
ISBN: 9781259729959
Author: Janice Gorzynski Smith Dr.
Publisher: McGraw-Hill Education
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Chapter 19, Problem 19.59P
An unknown compound
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An unknown compound C (molecular formula C4H8O3) exhibits IR absorptions at 3600−2500 and 1734 cm−1, as well as the following 1H NMR spectrum. What is the structure of C?
Identify the structures of isomers H and I (molecular formula C8H11N).a.) Compound H: IR absorptions at 3365, 3284, 3026, 2932, 1603, and1497 cm−1
b.) Compound I: IR absorptions at 3367, 3286, 3027, 2962, 1604, and1492 cm−1
Assume a compound with the formula C4H8O.
a) How many double bonds and/or rings does your compound contain?
b) If your compound shows an infrared absorption peak at 1715 cm-1, what functional group does it have?
c) If your compound shows a single 1H NMR absorption peak at 2.1 δ, what is its structure?
Chapter 19 Solutions
Package: Organic Chemistry with Connect 2-year Access Card
Ch. 19 - Prob. 19.1PCh. 19 - Problem 19.2 Give the structure corresponding to...Ch. 19 - Problem 19.3 Draw the structure corresponding to...Ch. 19 - Prob. 19.4PCh. 19 - Prob. 19.5PCh. 19 - Problem 19.6 Rank the following compounds in order...Ch. 19 - Problem 19.7 Explain how you could use IR...Ch. 19 - Prob. 19.8PCh. 19 - Problem 19.9 How many tetrahedral stereogenic...Ch. 19 - Problem 19.10 What alcohol can be oxidized to each...
Ch. 19 - Problem 19.11 Identify A-D in the following...Ch. 19 - Problem 9.12 Draw the cation that results when a...Ch. 19 - Problem 19.13 Draw the products of each acid-base...Ch. 19 - Problem 19.14 Given the values in Appendix A,...Ch. 19 - Problem 19.15 Rank the labeled protons in...Ch. 19 - Problem 19.16 Match each of the following values ...Ch. 19 - Problem 19.17 Rank the compounds in each group in...Ch. 19 - Problem 19.18 Rank the compounds in each group in...Ch. 19 - Prob. 19.19PCh. 19 - Problem 19.20 Which of the following pairs of...Ch. 19 - Problem 19.21 Two other commonly used sulfonic...Ch. 19 - Problem 19.22 Draw both enantiomers of each amino...Ch. 19 - Problem 19.23 Explain why amino acids, unlike most...Ch. 19 - Problem 19.24 Draw the positively charged,...Ch. 19 - Prob. 19.25PCh. 19 - Problem 19.26 Explain why the of the group of...Ch. 19 - Answer each question for A and B depicted in the...Ch. 19 - Prob. 19.28PCh. 19 - 19.29 Give the IUPAC name for each compound.
a....Ch. 19 - 19.30 Draw the structure corresponding to each...Ch. 19 - Prob. 19.31PCh. 19 - 19.32 Rank the following compounds in order of...Ch. 19 - 19.33 Draw the organic products formed in each...Ch. 19 - 19.34 Identify the lettered compounds in each...Ch. 19 - 19.35 Using the table in Appendix A, determine...Ch. 19 - 19.36 Draw the products of each acid-base...Ch. 19 - 19.37 Which compound in each pair has the lower ?...Ch. 19 - 19.38 Rank the compounds in each group in order of...Ch. 19 - 19.39 Rank the compounds in each group in order of...Ch. 19 - 19.40 Match the values to the appropriate...Ch. 19 - Prob. 19.41PCh. 19 - 19.42 Which carboxylic acid has the lower ,...Ch. 19 - Prob. 19.43PCh. 19 - 19.44 Explain the following statement. Although...Ch. 19 - Prob. 19.45PCh. 19 - 19.46 Explain why the of compound A is lower than...Ch. 19 - 19.47 Rank the following compounds in order of...Ch. 19 - Prob. 19.48PCh. 19 - Prob. 19.49PCh. 19 - 19.50 Draw all resonance structures of the...Ch. 19 - As we will see in Chapter 23, CH bonds are...Ch. 19 - Prob. 19.52PCh. 19 - The pKa of acetamide (CH3CONH2) is 16. Draw the...Ch. 19 - 19.54 Write out the steps needed to separate...Ch. 19 - Prob. 19.55PCh. 19 - Can octane and octan -1- ol be separated using an...Ch. 19 - 19.57 Identify each compound from its spectral...Ch. 19 - 19.58 Use the NMR and IR spectra given below to...Ch. 19 - 19.59 An unknown compound (molecular formula )...Ch. 19 - 19.60 Propose a structure for (molecular formula...Ch. 19 - 19.61 Match the data to the appropriate...Ch. 19 - Prob. 19.62PCh. 19 - Prob. 19.63PCh. 19 - Prob. 19.64PCh. 19 - 19.65 For each amino acid ,draw its neutral,...Ch. 19 - Calculate the isoelectric point for each amino...Ch. 19 - 19.67 Lysine and tryptophan are two amino acids...Ch. 19 - Prob. 19.68PCh. 19 - Prob. 19.69PCh. 19 - Prob. 19.70PCh. 19 - 19.71 Hydroxy butanedioic acid occurs naturally in...Ch. 19 - 19.72 Although it was initially sold as a rat...
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- Identify the structures of isomers H and I (molecular formula C8H11N).a.Compound H: IR absorptions at 3365, 3284, 3026, 2932, 1603, and 1497 cm−1b.Compound I: IR absorptions at 3367, 3286, 3027, 2962, 1604, and 1492 cm−1arrow_forwardCompounds B and C are isomers with molecular formula C5H9BrO2. The 1H NMR spectrum of compounds B and C are shown below. The IR spectrum corresponding to compound B showed strong absorption bands at 1739, 1225, and 1158 cm-1, while the spectrum corresponding to compound C have strong bands at 1735, 1237, and 1182 cm-1. 1.Based on the information provided, determine the structure of compounds B and C. 2.Assign all peaks in 1H NMR spectrum of compounds B and C.arrow_forwardAn unknown compound has a molecular formula of C4H6O2. Its IR spectrum shows absorptions at 3095, 1762, 1254, and 1118 cm -1. It exhibits the following signals in its 1H NMR spectrum (ppm): 2.12 (singlet,3H), 4.55 (doublets of doublets, 1H), 4.85 (doublet of doublets, 1H), 7.25 (doublets of doublets, 1H); and the following signals in its 13C NMR spectrum (ppm): 20.8, 100.4, 141.2, 168.0. Draw the structure of the unknown compoundarrow_forward
- An unknown compound C of molecular formula C6H12O32 exhibits a strong absorption in its IR spectrum at 1718 cm−1 and the given 1H NMR spectrum. What is the structure of 1H NMR spectrum. What is the structure of C?arrow_forwardCompounds A and B have molecular formula C9H10O. Identify their structures from the 1H NMR and IR spectra given.arrow_forward2. DEDUCE THE STRUCTURE FOR EACH COMPOUND WITH THE INDICATED MOLECULAR FORMULA AND THE 1H-NMR AND IR SPECTRA PROVIDED. Formula: C5H10Oarrow_forward
- Thymol (molecular formula C10H14O) is the major component of the oil ofthyme. Thymol shows IR absorptions at 3500–3200, 3150–2850, 1621, and1585 cm−1. The 1H NMR spectrum of thymol is given below. Propose apossible structure for thymol.arrow_forwardCompound O has molecular formula C10H12O and shows an IR absorption at 1687 cm−1. The 1H NMR spectrum of O is given below. What is the structure of O?arrow_forwardAn unknown compound C of molecular formula C6H12O3 exhibits a strong absorption in its IR spectrum at 1718 cm−1 and the given 1H NMR spectrum. What is the structure of C?arrow_forward
- Three isomeric compounds, A, B, and C, all have molecular formulaC8H11N. The 1H NMR and IR spectral data of A, B, and C are given below.What are their structures?arrow_forwardThree isomeric compounds, A, B, and C, all have molecular formula C8H11N. The 1H NMR and IR spectral data of A, B, and C are given below. What are their structures?arrow_forwardKetones undergo a reduction when treated with sodium borohydride, NaBH4. What is the structure of the compound produced by reaction of 2-butanone with NaBH4 if it has an IR absorption at 3400 cm-1 and M+=74 in the mass spectrum?arrow_forward
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