Used primarily as a phase-transfer catalyst in organic synthesis, it facilitates reactions between compounds in different phases, such as aqueous and organic layers, enhancing reaction rates and yields. It is particularly effective in nucleophilic substitution reactions, esterifications, and polymerizations. Additionally, it finds application in the preparation of pharmaceuticals, agrochemicals, and specialty chemicals, where it helps streamline processes and improve efficiency. Its role in promoting green chemistry by reducing the need for hazardous solvents is also noteworthy.