Chemistry NCERT Exemplar Solutions Class 12th Chapter Twelve

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It's referred to as cross Aldol Condensation.Cross aldol condensation occurs when two separate aldehydes or ketones combine to form a single molecule.

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ClCH₂COOH > FCH₂COOH > C₆H₅CH₂COOH > , CH₃COOH > CH₃CH₂OH

When compared to other alcohols, CH₃CH₂OH is the least acidic. Because of the halogen, FCH₂COOH is quite acidic. It is either an electron donating group or an electron receiving group in acidic strength. Acidic strength increases as the number of electron withdrawing groups increases. The acidic strength of electron donating groups diminishes.

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The electrophile formed when benzene reacts with benzoyl chloride in the presence of anhydrous AlCl₃ is benzoylinium cation, and the resultant product is benzophenone. Friedel Crafts acylation reaction is the name for this reaction.

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Benzal chloride can be made by chlorinating toluene in the presence of sunshine and then using the hydrolysis process to obtain benzaldehyde. This method can be used to make benzaldehyde in a commercial setting.

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Ans:

A: Ethane-1, 2-dial

B: Benzene-1, 4-carbaldehyde

C: 3-Bromobenzaldehyde

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(i) 3-Phenylprop-2-ene-1-al.

(ii) Cyclohexanecarbaldehyde

(iii) 3-Oxopentan-1-al

(iv) IUPAC name: But-2-enal

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Butanol is a four-carbon aldehyde, with the aldehyde group on the fourth carbon. It has a functional group and a carbonyl group that interacts dipole-dipole. Because butanol possesses a polar O-H bond, it exhibits intermolecular H bonding, which is not feasible in butanal due to the lack of a polar bond. The boiling point of butanol is higher than that of butan-1-ol.