Nitrogen Compounds
249 questions· page 1 of 25
Identify an organic compound that can be converted into by a reduction reaction. State the reagents and conditions for this reaction.
organic compound .............................................................................................................
reagents ............................................................................................................................
conditions ..........................................................................................................................
Identify an organic compound that can be converted into by a reduction reaction. State the reagent for this reaction.
organic compound .............................................................................................................
reagent ..............................................................................................................................
Identify a single test that will distinguish between and by producing a white precipitate with only one of these amines.
Draw the structure of the compound that is precipitated.
testing reagent ..................................................................................................................
amine that gives a precipitate ...........................................................................................
structure of the compound that is precipitated:
The structures of the amino acids serine and lysine are shown in Fig. 9.1.
Draw the structure for the dipeptide, ser–lys, with molecular formula .
The peptide functional group formed should be displayed.
A mixture of serine, lysine and ser–lys is analysed by electrophoresis using a buffer at pH 5.7.
Draw and label three spots on Fig. 9.2 to indicate the predicted position of each of these three species, serine, lysine and ser–lys, after electrophoresis.
Explain your answer.
State the reagents and conditions for steps 1 and 2 in Fig. 9.3.
step 1 ................................................................................................................................
step 2 ................................................................................................................................
Identify an organic compound that can be converted into by a reduction reaction. State the reagents and conditions for this reaction.
organic compound .............................................................................................................
reagents ............................................................................................................................
conditions ..........................................................................................................................
Identify an organic compound that can be converted into by a reduction reaction. State the reagent for this reaction.
organic compound .............................................................................................................
reagent ..............................................................................................................................
Identify a single test that will distinguish between and by producing a white precipitate with only one of these amines.
Draw the structure of the compound that is precipitated.
testing reagent ..................................................................................................................
amine that gives a precipitate ...........................................................................................
structure of the compound that is precipitated:
Draw the structure of the organic product formed when an excess of aqueous bromine is added to phenylamine.
A solution of lysine is produced with pH 9.7. Dilute sulfuric acid is added slowly until the pH of the solution is 1.0. The sulfuric acid reacts with lysine to produce different organic ions that are not present in significant concentrations at pH 9.7.
Draw the structures of three of the organic ions that form during the addition of sulfuric acid in the boxes. Draw the organic ion present at pH 1.0 in box C.
Draw the structure of the dipeptide Val-Lys. The peptide bond should be shown fully displayed.
Complete the table to describe three different syntheses.
- One of the three syntheses should involve a nucleophilic substitution reaction.
- The starting organic compound for each synthesis should contain a different functional group.
- A different reagent should be used for each synthesis.
| starting organic compound | reagent and conditions |
|---|---|
Draw the structure of the organic product formed when an excess of aqueous bromine is added to phenylamine.
A solution of lysine is produced with pH 9.7. Dilute sulfuric acid is added slowly until the pH of the solution is 1.0. The sulfuric acid reacts with lysine to produce different organic ions that are not present in significant concentrations at pH 9.7.
Draw the structures of three of the organic ions that form during the addition of sulfuric acid in the boxes. Draw the organic ion present at pH 1.0 in box C.
Draw the structure of the dipeptide Val-Lys. The peptide bond should be shown fully displayed.
The molecular formulae of three nitrogen-containing compounds are given.
Describe and explain the relative basicities of S, T and U.
The molecular formulae of three nitrogen-containing compounds are given.
| S | |
| T | |
| U |
Describe and explain the relative basicities of S, T and U.
Suggest reagents and conditions for reaction 1 and for reaction 2.
reaction 1
reaction 2
State the type of reaction in reaction 1 and name the mechanism in reaction 2.
type of reaction in reaction 1
mechanism of reaction 2