Short Answer TypeWhy does methanal not give aldol condensation while ethanol gives?
Methanol does not give aldol condensation because only those compounds which have α-hydrogen atoms can undergo aldol reaction ethanol pessess α-hydrogen and undergoes aldol condensation Methanal has no alpha hydrogen atoms hence does not undergo aldol condensation.
Why is benzaldehyde is less reactive than acetaldehyde towards nucleophilic addition reactions?
Account for the following:
(i) Formaldehyde gives Cannizzaro’s reaction whereas acetaldehyde does not.
(ii) Carboxylic acids do not give characteristic reactions of carbonyl compounds.
Account for the following:
(i) Chloroacetic acid has higher pKa value than acetic acid.
(ii) Electrophilic substitution in benzoic acid takes place at meta position.
(iii) Carboxylic acids have higher boiling points than alcohols of comparable molecular masses.
Long Answer TypeHow would you obtain the following named sources:
(i) Tertiary butyl alcohol from acetone? (ii) Acetone from acetic acid?
Mention conditions for reactions involved.
Short Answer TypeExplain why O-hydroxy benzaldehyde is a liquid at room temperature while p- hydroxy benzaldehyde is a high melting solid.
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