Chapter 23.2, Problem 2CC

Interpretation Introduction

Interpretation:

The structures of compounds A–E in the given reaction scheme should be identified.

Concept Introduction:

Preparation of organolithium: They are prepared by reaction of organohalide in presence of two equivalents of $Li$.

    $\text{R-X}\stackrel{\text{Li}\left(\text{2eq}\right)}{\to }\text{R-Li + LiX}$

Preparation of Grignard reagents: They are prepared by reaction of organohalide in presence $Mg$ in ether solvent.

    $\text{R-X}\underset{E{t}_{2}O}{\overset{Mg}{\to }}\text{R-Mg-X}$

Alkyl, vinyl, or aryl-magnesium halides ($\text{RMgX}$) is called as Grignard reagent.

Reaction between Grignard reagent and water: Grignard reagents are strong bases which in presence of water forms hydrocarbon easily.