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MHT CET 202623 AprilMorning Shift
Exam
MHT CET
Year
2026
Date
23 April
Shift
Morning Shift
Subject
Chemistry
Chapter
Haloalkanes and Haloarenes

MHT CET 2026 · 23 April · Morning Shift · Chemistry · Haloalkanes and Haloarenes

Above reaction is known as

Above reaction is known as
Above reaction is known as

Options

  1. AFittig reaction.
  2. BSandmeyer reaction.
  3. CKolbe reaction.
  4. DReimer-Tiemann reaction

Correct answer

B. Sandmeyer reaction.

Step-by-step solution

The given reaction shows the conversion of benzenediazonium chloride (C_6H_5N_2^+Cl^-)tochlorobenzene(C6H5Cl) to chlorobenzene (C_6H_5Cl) using copper(I) chloride (Cu_2Cl_2)asareagent.<br><br>ThisisaclassicexampleoftheSandmeyerreaction,whereanaryldiazoniumgroupisreplacedbyahalideorpseudohalide(like) as a reagent.<br><br>This is a classic example of the Sandmeyer reaction, where an aryl diazonium group is replaced by a halide or pseudohalide (likeCl^-,,Br^-,or, orCN^-)inthepresenceofthecorrespondingcopper(I)salt.<br><br>Otherreactionsmentioned:<br>Fittigreactioninvolvesthecouplingoftwoarylhalidesusingsodiummetal.<br>Kolbereactionisthecarboxylationofsodiumphenoxidetoformsalicylicacid.<br>Reimer−Tiemannreactionistheformylationofphenolusingchloroformandabasetoformsalicylaldehyde.<br><br>Answer:Sandmeyerreaction.) in the presence of the corresponding copper(I) salt.<br><br>Other reactions mentioned:<br>Fittig reaction involves the coupling of two aryl halides using sodium metal.<br>Kolbe reaction is the carboxylation of sodium phenoxide to form salicylic acid.<br>Reimer-Tiemann reaction is the formylation of phenol using chloroform and a base to form salicylaldehyde.<br><br>Answer: Sandmeyer reaction.
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