Amines

Question 1

When trying to produce amines by reacting a haloalkane with cyanide and then reducing the nitrile, what are its disadvantages?

Answer 1

Toxic / poisonous KCN or cyanide or CN−
or
HCN
Expensive LiAlH4
ignore acidified
OR lower yield because 2 steps
Allow H2 flammable / explosive etc.

Question 2

When trying to produce amines by nucleophilic substitution, what are its disadvantages?

Answer 2

Further reaction / substitution likely
Allow impure product.