Alkyl halides react with dialkyl copper reagents to give

Alkyl halides react with dialkyl copper reagents to give
  1. alkenes
  2. alkyl copper halides
  3. alkanes
  4. alkenyl halides

Solution

$\mathrm{R}_2 \mathrm{CuLi}+\mathrm{R}^{\prime} \mathrm{X} \longrightarrow \mathrm{R}-\mathrm{R}^{\prime}+\mathrm{R}-\mathrm{Cu}+\mathrm{LiX}$

Asked in: JEE Main 2005

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