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JEE Main levelOne or more correct optionsDifficulty 2 of 3o1256

The acid chloride shown reacts with various reagents. Select the correct statement(s).

  1. AWith methanol and pyridine it forms methyl ethanoate
  2. BWith an excess of CH3MgBr followed by aqueous work-up it forms a tertiary alcohol
  3. CWith excess LiAlH4 followed by work-up the product is ethanal
  4. DWith water it forms ethanal and hypochlorous acid

Answer: A, B

Ethanoyl chloride reacts with methanol and a base (pyridine) to give methyl ethanoate. With an excess of methylmagnesium bromide it gives the ketone and then the tertiary alcohol 2-methylpropan-2-ol after work-up. Excess lithium aluminium hydride gives ethanol rather than stopping at ethanal, and water gives ethanoic acid, not ethanal.
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