To draw Fischer projections for all 2-ketopentoses. The D-2-ketopentoses and L-2-ketopentoses and enantiomers should be identified. By referring to Table 10-2, the name of each 2-ketopentoses should be determined. Concept Introduction: A monosaccharide with five carbon atoms is known as pentose. In Ketopentoses, there is a ketone functional group at position 2. If isomers are mirror images, then they are enantiomers.

Question

Nitration of Methyl Benzoate: 1. Predict the major product for the reaction below AND provide a mechanism. Include ALL resonance structures for the intermediate. C(CH3)3 NO₂* ? 2. Assuming the stoichiometry is 1:1 for the reaction above, what volume of concentrated nitric acid would be required to mononitrate 0.50 grams of the compound above? What product(s) might you expect if you nitrated phenol instead of methyl benzoate? Explain your reasoning. What signals appeared/disappeared/shifted that indicate that you have your intended product and not starting material? What other impurities are present in your product and how do you know?

Answer 1

Question

Chapter 20.1, Problem 20.1P

Interpretation Introduction

Interpretation:

To draw Fischer projections for all 2-ketopentoses. The D-2-ketopentoses and L-2-ketopentoses and enantiomers should be identified. By referring to Table 10-2, the name of each 2-ketopentoses should be determined.

Concept Introduction:

A monosaccharide with five carbon atoms is known as pentose. In Ketopentoses, there is a ketone functional group at position 2. If isomers are mirror images, then they are enantiomers.

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