Used as a chiral amine catalyst in asymmetric synthesis, particularly in enantioselective alkylation and amination reactions. Its bulky trimethylsilyl group enhances stereoselectivity by influencing the transition state geometry. Commonly employed in pharmaceutical intermediates synthesis where high enantiomeric excess is required. Also serves as a building block in the preparation of functionalized propargylamines, which are key motifs in bioactive molecules and organic materials.