Making and Reacting Aliphatic and Aromatic Compounds Flashcards
How do you make a aliphatic amine?
React halogenoalkane with excess of ammonia, dissolved in ethanol, making amine. Also hydrogen halide is produced and reacts with excess ammonia making ammonium salt.
How do you make aromatic amines?
A nitro compound is heated with a reducnig agent (tin) ad concetrated hydrochloric acid.
Explain how the basicity of amines occurs?
nitroge atom i amine group has a lone pair of electrons, that act as a base by forming co-ordinate bods with hydrogen ion.
Ethanoylation of amines.
Hydrogen atom of an amine group can be subsituted by an ethanoyl group CH3C=O33 33 chCCHCHC<span><span></span></span>
How does a aliphatic amine reacts with nitrous acid?
Reactats: Aliphatic amines and nitrous acid.
Conditions: Room Temperature
Products: alcohol, water and nitrogen gas.
How does an aromatic amine react with nitrous acid?
Reactats: Aromatic amines and nitrous acid
Conditions: 5oC
Products: Intermediate diazonium compound
What is the coupling reaction?
Coupling reaction is formation of azo dyes, which contain chromophore and links two benzene rings.
What are the conditions of the coupling reaction?
- Two diazonium compounds.
- 50C
- Alkaline Soloution
What happens if the coupling reaction is above 100C?
Decompostion occurs giving phenol and bubbles of nitrogen gas.
How do you make phenylamine?
Its obtained by reducing nitrobenzene with tin and an acid.
What is an amino acid?
They are carboxylic group that have -NH2 group bonded to the carbon atom next to acid group.
Why are amino acids are amphoteric substances?
They are dissolved in acidic or alkaline solutions and can gain or lose a proton respectively.
What is the link between a dipeptide called?
Peptide linkage.
What is a primary structure?
Sequence of amino acids in the chain.
What is a secondary structure?
Amino acid coiling into double-pleated helix due to hydrogen bonding.
What is a tertiary structure?
The overall £D shape of the protein molecule.
