4,4'-Dibromo-9,9'-spirobi[fluorene](CAS: 1257321-41-7)

4,4'-Dibromo-9,9'-spirobi[fluorene] is a crystalline compound with a high molecular weight and low solubility in common organic solvents. It has a high melting point and is moderately reactive towards nucleophiles. It is used in various applications due to its unique electronic properties.

4,4'-Dibromo-9,9'-spirobi[fluorene] can be synthesized through a multistep reaction involving the coupling of brominated fluorene derivatives. This process typically requires a palladium catalyst and a ligand to achieve high selectivity and yield.

4,4'-Dibromo-9,9'-spirobi[fluorene] is primarily used in the semiconductor industry for organic thin-film transistors and light-emitting diodes. It is also used in the pharmaceutical industry for certain organic synthesis reactions.

When handling 4,4'-Dibromo-9,9'-spirobi[fluorene], ensure all necessary personal protective equipment (PPE) is used, including gloves, goggles, and a lab coat. Work in a well-ventilated fume hood and follow proper spill procedures and consult the Safety Data Sheet (SDS) for detailed instructions.