Question

Alkyl halides react with dialkyl copper reagents to give:

• A. Alkanes
• B. Alkenes
• C. Alkenyl Halides
• D. Alkyl copper halides

Answer 1

The correct option is A Alkanes

Alkyl halides react with dialkyl copper reagents to give alkanes. The reaction is called Corey House synthesis.
$R_{2}CuLi+R^{\prime }X\to R-R^{\prime }+RCu+LiX$

For example, ethyl iodide reacts with lithium diethyl cuprate to form butane.
$(C_2{H}_5{)}_{2}CuLi+C_2{H}_5-I\to C_2{H}_5-C_2{H}_5+C_2{H}_{5}Cu+LiI$

Hence, option A is correct.