Phosphonic acid: preparation and applications.

Area of Science:

• Chemistry
• Materials Science
• Biomedical Research

Background:

• Phosphonic acids feature a P-C bond and are structurally analogous to phosphates.
• Their unique properties enable diverse applications in medicine, materials, and surface science.

Purpose of the Study:

• To review the applications of phosphonic acids across various scientific fields.
• To survey and compare different synthetic methodologies for phosphonic acids.

Main Methods:

• Overview of applications in drug design, bone targeting, supramolecular chemistry, and surface functionalization.
• Survey of synthetic routes including those from phosphonates, phosphines, phosphonamides, and phosphinic acids.
• Evaluation of direct synthesis methods using phosphorous acid.

Main Results:

• Phosphonic acids are crucial in numerous research areas, including chemistry, biology, and physics.
• Dealkylation of dialkyl phosphonates via acidic hydrolysis or the McKenna procedure are identified as superior synthetic methods.
• Various synthetic pathways exist, each with specific advantages for generating the phosphonic acid functional group.

Conclusions:

• The synthesis of phosphonic acids is critical for advancing research in diverse scientific disciplines.
• Acidic dealkylation and the McKenna procedure provide efficient and reliable methods for synthesizing phosphonic acids.
• This review highlights the broad utility and synthetic accessibility of phosphonic acids.