Used as a key starting material in organic synthesis, particularly in the preparation of substituted fullerenes and polycyclic aromatic hydrocarbons. Commonly employed in Diels-Alder reactions as a diene due to its strained cyclopentadienone core. Widely applied in the synthesis of ligands for transition metal catalysts, especially in the development of metallocenes. Also utilized in materials science for constructing conjugated organic frameworks with potential applications in organic electronics and optoelectronic devices.