Question

Part A - Determination of number of H-NMR signals It is important to be able to recognize the significant spectroscopic differences among isomers and other compounds with a similar molecular structure Generally, analyzing the molecular structures and spectroscopic data to answer a few questions will help you identify how to distinguish among molecules with similar structures. The following questions are useful when using 1H-NMR to accomplish the goal: 1. How many spectroscopic signals are expected? 2. What are the expected splitting patterns for each signal? 3. What is the expected integration ratio for the spectrum? 4. Are there differences in chemical shifts between hydrogen atoms in the isomeric structures that are significantly different? How many 1H-NMR signals do you expect for each of the potential reaction products shown in the reaction in the introduction between methyl benzoate and nitric acid? Drag the appropriate labels to their respective targets. View Available Hint(s) Reset Help Number of 'H-NMR signals predicted IUPAC name Molecule 10 2 compound 1 methyl 4-nitrobenzoate 0 compound 2 methyl 3-nitrobenzoate 12 4 0 compound 3 methyl 2-nitrobenzoate compound 4 methyl 3,4-dinitrobenzoate 16 8

Answer 1

The answer is given as follows

o -CH3 UOL. Hc 3