Carboxylic acids and derivatives (A-level only)

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Question 10
Medium

This question is about amino acids and amide chemistry.

a.

Draw the structure of the zwitterion formed by glycine.

[1]
b.

Draw the structure of serine at high pH\text{pH}pH.

[1]
c.

Draw the structures of both dipeptides formed when glycine reacts with serine. In each structure, show all the atoms and bonds in the amide (peptide) link.

[2]
d.

An amide link is also formed when an acyl chloride reacts with a primary amine. Name and outline a mechanism for the reaction between propanoyl chloride, CH3CH2COCl\text{CH}_3\text{CH}_2\text{COCl}CH3​CH2​COCl, and ethanamine, CH3CH2NH2\text{CH}_3\text{CH}_2\text{NH}_2CH3​CH2​NH2​. Give the IUPAC name of the organic product.

[5]

Carboxylic acids and derivatives (A-level only) Questions

  1. A Level
  2. /Chemistry
  3. /Carboxylic acids and derivatives (A-level only)