The functional group that has to be present in the compound to undergo decarboxylation reaction has to be given. Concept Introduction: The carboxylate ions play key roles in many reactions that occur within human body. Generally the carboxyl functional group is not reduced or oxidized. Apart from oxidation and reduction, the carboxylic acid undergoes decarboxylation reaction. In this reaction the carboxylic acid gets converted to smaller organic molecule and a molecule of carbon dioxide. The general reaction scheme for this reaction can be given as shown below,

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6. Match each of the lettered items in the column on the left with the most appropriate numbered item(s) in the column on the right. Some of the numbered items may be used more than once and some not at all. a. Z = 37 1. b. Mn 2. C. Pr element in period 5 and group 14 element in period 5 and group 15 d. S e. [Rn] 7s¹ f. d block metal 3. highest metallic character of all the elements 4. paramagnetic with 5 unpaired electrons 5. 4f36s2 6. isoelectronic with Ca²+ cation 7. an alkaline metal 8. an f-block element

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Chapter 16, Problem 16.74EP

Interpretation Introduction

Interpretation:

The functional group that has to be present in the compound to undergo decarboxylation reaction has to be given.

Concept Introduction:

The carboxylate ions play key roles in many reactions that occur within human body. Generally the carboxyl functional group is not reduced or oxidized. Apart from oxidation and reduction, the carboxylic acid undergoes decarboxylation reaction. In this reaction the carboxylic acid gets converted to smaller organic molecule and a molecule of carbon dioxide. The general reaction scheme for this reaction can be given as shown below,

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6. Match each of the lettered items in the column on the left with the most appropriate numbered item(s) in the column on the right. Some of the numbered items may be used more than once and some not at all. a. Z = 37 1. b. Mn 2. C. Pr element in period 5 and group 14 element in period 5 and group 15 d. S e. [Rn] 7s¹ f. d block metal 3. highest metallic character of all the elements 4. paramagnetic with 5 unpaired electrons 5. 4f36s2 6. isoelectronic with Ca²+ cation 7. an alkaline metal 8. an f-block element

Draw all formal charges on the structures below as is and draw 1 resonance structure that is more stable.

Part II. xiao isolated a compound TAD (Ca H 10 N₂) from tobacco and obtained its IR spectrum. Xiao proposed a chemical structure shown below: % Transmittance 4000 3500 3000 2500 2000 Wavenumber (cm-1) 1500 1000 (a) Explain why her proposed structure is inconsistent with the IR spectrum obtained (b) TAD exists as a tautomer of the structure xiao proposed. Draw the structure and explain why it is more compatible with the obtained spectrum. (C) what is the possible source for the fairly intense signal at 1621cm1