Question

how the convertion of an aldehyde to acetal can carry out right chemical equation?

Answer 1

Answer:

It has been demonstrated that water adds rapidly to the carbonyl function of aldehydes and ketones to form geminal-diol. In a similar reaction alcohols add reversibly to aldehydes and ketones to form hemiacetals (hemi, Greek, half). This reaction can continue by adding another alcohol to form an acetal

Answer 2

Explanation: How will you bring out the following conversion :

(i) Acetyl chloride to acetaldehyde :

Rosemond's reaction:

H 2gas is passed through a boiling solution of acetyl chloride in xylene in the presence of  P d catalyst supported by BaSO4​.The catalyst is poisoned by  Sulphur or quinoline. This avoids further reduction of acetaldehyde to ethyl alcohol CH3 − O∣∣C −Cl Pd/BaSO4 Sulphur CH3 − O∣∣C −H + H Cl

(ii) Methanol to Ethanal.

Methanol reacts with methyl magnesium bromide followed by acid hydrolysis to form ethanol. Controlled oxidation gives ethanal