Used as a key intermediate in Suzuki-Miyaura cross-coupling reactions, enabling the formation of carbon-carbon bonds in the synthesis of complex organic molecules. Particularly valuable in the development of organic electronic materials, such as OLEDs and organic semiconductors, due to its structural rigidity and stability. Its spirofluorene-xanthene framework enhances thermal and oxidative stability, making it suitable for high-performance optoelectronic applications. Also employed in the preparation of conjugated polymers and small-molecule emitters for use in light-emitting diodes and sensors.