26 Carbonyls and carboxylic acids Flashcards
1
Q
What is NaBH4?
A
Sodium tetrahydridoborate, nucleophile is hydride ion.
2
Q
Reduction of aldehyde/ketone to alcohol.
A
Warmed with NaBH4 in aqueous solution.
3
Q
What is a hydroxynitrile?
A
A compound with OH and CN attached to the same carbon.
4
Q
How can the presence of the carbonyl group be tested for?
A
2,4-DNP (or Brady’s reagent).
5
Q
How can you distinguish between an aldehyde and a ketone?
A
Tollens’ reagent. Aldehyde indicated by silver mirror.
6
Q
Carboxylic acid and metal forms…
A
Hydrogen gas and carboxylate salt.
7
Q
What are the derivatives of carboxylic acid?
A
Ester, acyl chloride, acid anhydride and amide.
