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NEET CHEMISTRYAldehydes, Ketones and Carboxylic AcidsEasy

Question

The reactant 'A' in the below-mentioned reaction is:

A

Benzoyl chloride

B

Toluene

C

Acetophenone

D

Benzoic acid

Step-by-Step Solution

Benzoyl chloride (C6H5COClC_6H_5COCl) is an acid derivative (acyl halide) derived from benzoic acid. In the context of organic synthesis described in NCERT, acyl halides like benzoyl chloride are prepared from carboxylic acids (e.g., Benzoic acid) by reaction with PCl5PCl_5, PCl3PCl_3, or SOCl2SOCl_2. Benzoyl chloride acts as a reactive intermediate (Reactant 'A') in various reactions:

  1. Friedel-Crafts Acylation: Reacts with benzene in the presence of anhydrous AlCl3AlCl_3 to form benzophenone or acetophenone derivatives [1].
  2. Rosenmund Reduction: It is hydrogenated over a catalyst (Pd/BaSO4) to form benzaldehyde. The other options are hydrocarbons (Toluene), ketones (Acetophenone), or acids (Benzoic acid), which serve as precursors or products in these schemes.

Exam Context & Concepts Covered

This question aligns with the NEET CHEMISTRY syllabus, specifically targeting concepts from Aldehydes, Ketones and Carboxylic Acids. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.

CHEMISTRYAldehydes, Ketones and Carboxylic Acidsreactantbelowmentionedreaction

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