(a) How will you obtain the following :(i) Benzaldehyde from Phenol (ii) Benzoic acid from Aniline(b) Give reasons :(i) Aldehydes are more reactive than ketones towards nucleophilic reagents.(ii) Electrophilic substitution in benzoic acid takes place at meta position.(iii) Carboxylic acids do not give the characteristic reactions of carbonyl group.
Organomagnesium compounds
The interaction of alkyl halide with Mg metal in a suitable ether solvent is the common method for the synthesis of the Grignard reagent.
Hydrolysis Grignard Reactions and Reduction
Organomagnesium halides are Grignard reagents. Francois Auguste Victor Grignard, a French chemist who received the Nobel Prize in Chemistry in 1912, created these highly useful reagents.
(a) How will you obtain the following :
(i) Benzaldehyde from Phenol (ii) Benzoic acid from Aniline
(b) Give reasons :
(i)
(ii) Electrophilic substitution in benzoic acid takes place at meta position.
(iii) Carboxylic acids do not give the characteristic reactions of carbonyl group.
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