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MHT CET202523 Apr 2025Morning ShiftChemistryAldehydes and KetonesActual

Identify substrate 'S' in the following reaction. S Dimethyl cadmium Propanone + Cadmium chloride

Options

  1. AEthyl chloride
  2. BEthylene dichloride
  3. CEthanoyl chloride
  4. DEthylidene dichloride

Correct answer

C. Ethanoyl chloride

Step-by-step solution

Dimethyl cadmium (CH₃)₂ Cd reacts selectively with acyl chlorides to form ketones. The reaction produces propanone CH₃ COCH₃ and cadmium chloride, indicating transfer of a methyl group to the carbonyl carbon. The general transformation is RCOCl + (CH₃)₂ Cd RC(O)CH₃ + CH₃CdCl . For the product to be CH₃ COCH₃ , the acyl chloride must be CH₃ COCl . Among the options, only ethanoyl chloride CH₃ COCl is an acyl chloride capable of this transformation. The final answer is C .

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