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JEE Main levelSingle correct optionDifficulty 2 of 3hx083

Ethylmagnesium bromide is treated with . The organic product is

  1. A
  2. B
  3. C
  4. D

Answer: B

The Grignard carbon acts as a base and takes one deuteron from : . Only the carbon that carried Mg gains deuterium, giving monodeuterated ethane.
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