13dicyanobenzene

1,3-Dicyanobenzene, also known as isophthalonitrile, is an organic compound with the chemical formula C6H4(CN)2. It is one of three positional isomers of dicyanobenzene, with the other two being 1,2-dicyanobenzene (phthalonitrile) and 1,4-dicyanobenzene (terephthalonitrile). In 1,3-dicyanobenzene, the two nitrile (-CN) groups are attached to a benzene ring at the meta positions. It is a colorless solid at room temperature.

The synthesis of 1,3-dicyanobenzene can be achieved through various methods, including the ammoxidation of m-xylene. This process involves reacting m-xylene with ammonia and oxygen in the presence of a catalyst. Another common route is the dehydration of isophthalamide.

1,3-Dicyanobenzene is primarily used as a precursor in the synthesis of polymers, particularly those with high thermal stability. It is a monomer for the production of certain polyamides and polyimides. Its rigid structure and the presence of reactive nitrile groups make it suitable for creating materials with desirable mechanical and thermal properties. It can also be used in the synthesis of various organic intermediates for pharmaceuticals and agrochemicals. Its applications are generally found in specialized chemical manufacturing rather than in consumer products.