Carbxylic acids Flashcards
Oxidation to form carboxylic acids
Oxidise primary alcohols to form an aldehyde
CH3CH2OH+[O]—>CH3CHO+H2O
Aldehydes are then further oxidised to carboxylic acids
CH3CHO+[O]—>CH3COOH
Hydrolysis to form carboxylic acids
Nitriles are hydrolysed
Reflux with dilute HCl or H2SO4
The C(triple bond)N is converted into COOH
CH3CH2CN+HCl+2H2O—>CH3CH2COOH
Carboxylic acid and alkali
Salt and water
Carboxylic acid and reactive metal
Salt and hydrogen (gas)
Carboxylic acid and carbonate
Salt, water and CO2
Carboxylic acid and alcohol
Ester
Reduction of carboxylic acids
Reduced to primary alcohols using LiAlH4
Ester hydrolysis
Can be hydrolysed to carboxylic acid and an alcohol using dilute aqueous sulfuric acid
CH3CO2CH2CH3+H2O—> CH3CO2H+CH3CH2OH
Can also be hydrolysed to carboxylate salt and an alcohol using sodium hydroxide
CH3CO2CH2CH3+NaOH—>CH3CO2-Na++CH3CH2OH
Ester uses
Solvents
Perfumes
Flavourings