4-Fluorophenylboronic Acid丨CAS 1765-93-1

4-Fluorophenylboronic acid is widely useful in medicinal chemistry for introducing a 4-fluorophenyl group into complex molecular structures. Through Suzuki–Miyaura coupling with suitable aryl or heteroaryl halides, it enables the preparation of fluorinated biaryl compounds and related pharmaceutical intermediates. Fluorine substitution is frequently explored in drug discovery because it can affect molecular conformation, lipophilicity, metabolic stability, and biological activity. Consequently, this compound supports the synthesis of research compounds, lead structures, and intermediates for pharmaceutical development.

One of the principal applications of 4-Fluorophenylboronic acid is palladium-catalyzed Suzuki–Miyaura cross-coupling. Its boronic acid group reacts with suitable aryl, heteroaryl, and other compatible electrophilic partners to form carbon–carbon bonds. This provides an efficient route to fluorinated biaryl structures and more complex aromatic frameworks. The para-fluorine substituent generally remains available in the coupled product for further transformations or as a permanent structural feature. The compound is therefore useful in synthetic route development and the preparation of functionalized aromatic molecules.

The fluorinated phenyl group can be introduced into extended aromatic structures used in the development of functional organic materials. Through coupling reactions, 4-Fluorophenylboronic acid can contribute to the synthesis of substituted biphenyls and other aromatic compounds investigated for their electronic, optical, and thermal properties. Fluorine substitution can influence molecular polarity, intermolecular interactions, and material behavior, making the compound a useful building block in materials chemistry research.