How is lithium hydride used to make lithium aluminum hydride?

Lithium aluminum hydride (${\text{LiAlH}}_4$) is produced through the chemical reaction of lithium hydride ($\text{LiH}$) with anhydrous aluminum chloride (${\text{AlCl}}_3$).12

This synthesis is a significant application of lithium hydride, which serves as a key precursor in the creation of this powerful reducing agent. Once formed, lithium aluminum hydride is widely utilized in organic chemistry for its ability to quickly reduce various compounds, such as aldehydes, ketones, and carboxylic esters, into alcohols.3412