Mesitylene is a key building block in organic synthesis, with its unique properties making it a valuable reagent in many reactions. Its three methyl groups make it more bulky and hindered than other aromatic hydrocarbons, affecting its reactivity and making it less reactive than benzene. Mesitylene is relatively stable and can withstand high temperatures and harsh reaction conditions, making it a valuable reagent in organic synthesis.

Mesitylene finds applications in the synthesis of many chemicals, including pharmaceuticals, dyes, and fragrances. For example, mesityl oxide, which is produced by the oxidation of mesitylene, is used in the production of fragrances and flavors. Mesitylene is also used to produce mesitaldehyde, a key precursor to vitamin E.

Mesitylene is also used in the production of polymers, such as poly(aryl ether ketone)s, which have applications in the aerospace, automotive, and electronics industries. It is also used in the production of liquid crystals, which have applications in displays and optics.

Mesitylene is a versatile compound with a wide range of applications in organic synthesis and industry. Its unique properties make it a valuable reagent in many reactions, and its applications are expected to expand further in the future.