Identify the product when reacts with LiAlH 4 / H 2 O .

Alcohols can be prepared by treating aldehydes and ketones with sodium borohydride ( NaBH 4 ) or lithium aluminium hydride ( LiAlH 4 ). LiAlH 4 is an expensive reagent and therefore, used for preparing special chemicals only. Aldehydes yield primary alcohols whereas ketones give secondary alcohols. The following chemical reaction will take place-

Identify the product when reacts with NaBH 4 .

Alcohols are prepared by treating aldehydes and ketones with sodium borohydride. Aldehydes yield primary alcohols whereas ketones give secondary alcohols. The following chemical reaction will take place when ketone reacts with NaBH 4 to give secondary alcohol-

Identify the product when reacts with C 2 H 5 MgBr .

Alcohols can also be prepared by reacting aldehydes and ketones with Grignard reagent i,e. R - Mg - X . Here the ketone produces tertiary alcohol. In this reaction, the first step of the reaction is the nucleophilic addition of Grignard reagent to the carbonyl group to form an adduct. Hydrolysis of the adduct yields an alcohol. The following chemical reaction will take place-