2-Fluoro-4-Iodophenylboronic Acid: Setting a New Standard in Organoboron Chemistry

About the Product

2-Fluoro-4-Iodophenylboronic Acid, also known by its CAS number 936060-51-6, has become a core building block in today’s progressive organic synthesis labs. As the manufacturer, we see regular demand for this compound from both research and process chemists looking to expand their options for coupling reactions. Its chemical structure combines a fluorine atom in the ortho-position and an iodine atom in the para-position of the phenylboronic moiety, with a boronic acid group ensuring compatibility with Suzuki-Miyaura cross-coupling and related methodologies. By producing this compound from the ground up—selecting raw materials, controlling reaction pathways, and optimizing purification—our facility ensures that quality meets rigorous standards, so downstream applications move forward without unwelcome surprises.

The appearance ranges from off-white to pale yellow solid, depending on storage and handling. Assay levels exceed 97% by HPLC, with tightly maintained control over water and residual solvents in every batch. Packaging typically runs from research-scale 1 g vials to commercial bulk quantities, with each lot accompanied by an analysis report. Stability considerations often come up with boronic acids, especially in humid environments; our team stores and ships this material with desiccation in mind, thanks to on-site studies tracking decomposition routes. We have found that careful handling during drying and packing preserves purity, reducing rework on the customer’s end.

Why This Compound Caught Our Attention

We have worked with a wide range of organoboron compounds through the years. Some stand out for their reactivity, and others start a bit of head scratching during purification. 2-Fluoro-4-Iodophenylboronic Acid lands in that sweet spot where chemical reactivity matches operational handling, making it a favorite for our lab team. The unique substitution pattern offers selectivity not available in the parent phenylboronic acid. Fluorine and iodine—both introduced via controlled halogenation steps—bring more than novelty to the molecule. Their influence on electronic and steric properties impacts how this intermediate performs in reactions.

For research groups interested in producing fluorinated and halogenated biaryls, this material solves the problem of limited options. The presence of fluorine can modulate pharmacokinetics in a drug candidate, and iodine increases cross-coupling reactivity for certain Pd-based catalytic cycles. Chemists trying to introduce both in a single step find this boronic acid opens synthetic shortcuts. Compared to less decorated analogs, 2-Fluoro-4-Iodophenylboronic Acid allows late-stage modification without extensive route redevelopment.

Applications Driven by Experience

Applications for this compound extend from pharmaceuticals and agrochemicals to materials science. We hear from process chemists working on kinase inhibitors and fluorinated building blocks, as well as those looking to embed specific functional groups into OLEDs or polymer backbones. In Suzuki-Miyaura coupling, this boronic acid partners well with a variety of aryl or vinyl halides. Our analytical team tracked reaction profiles and confirmed that yields remain consistent across different catalyst systems, provided moisture is minimized. Over the years, we have also seen this compound used in automated parallel synthesis, where reliability under repetitive conditions matters most.

A client recently shared data from an integrated synthesis where they paired this compound with a brominated, heterocyclic substrate. Conventional phenylboronic acids stalled out, while the 2-fluoro-4-iodo group delivered a clean product, saving time and purification overhead. This sort of feedback pushes us to maintain rigorous control standards and validate every new process development batch.

Differences from Other Boronic Acids We Have Made

After years producing various phenylboronic acids, the differences in reactivity and handling start to stand out. Standard phenylboronic acid suits classic couplings but struggles with electronic-rich or hindered partners. The introduction of a fluorine atom in 2-Fluoro-4-Iodophenylboronic Acid means our chemists see sharper selectivity and improved conversion rates in transition-metal catalyzed reactions. On the other hand, the iodine group impacts the molecule’s physical properties, boosting its utility in multi-step synthesis where orthogonal reactivity comes into play.

We have compared side-by-side reaction runs using 4-fluorophenylboronic acid, 4-iodophenylboronic acid, and this 2-fluoro-4-iodo version. Subtle changes in the substitution pattern alter solubility, reaction kinetics, and post-reaction purification. Our operations team finds that beyond the theoretical chemistry, practical aspects such as filtration speed, byproduct management, and shelf stability influence bulk users just as much as synthetic possibilities. We document all observed trends and adjust our own process to reflect these realities, ensuring that every delivery meets real-world needs instead of chasing theoretical maxima.

Handling Challenges and Real-World Solutions

Boronic acids as a class have quirks—sensitivity to moisture, occasional dimerization, and solubility caveats. Over the production lifecycle of 2-Fluoro-4-Iodophenylboronic Acid, we refined storage and shipping protocols to minimize degradation. Instead of keeping it on the shelf, our logistics group pre-packs under inert gas, ships with silica packs, and selects containers free from leachable materials. Several times we’ve intercepted transit issues—delays or warehouse heat spikes—and replaced batches before they reach projects in progress. Chemists relying on timely synthesis can’t afford last-minute hiccups, so our quality team follows every shipment by lot number and retains samples for reference.

Sample failures push us to tighten internal controls. If a batch veers off spec, our team retraces each process step and investigates root causes. Unlike some resellers, we run everything—from bromination to borylation and final purification—on site, giving us control over every variable. This integrated approach means we respond to feedback with process changes, such as modifying solvent selection during crystallization or tweaking drying conditions. Over time, our rejection rates have come down, and repeat orders for this compound now outpace simpler analogs in our organoboron catalog.

Supporting Reaction Development

Synthetic chemists value reliability. In coupling chemistry, small changes in reagent quality ripple through scale-up and optimization work. Our production team has worked with research partners to troubleshoot sticky points. For customers scaling from milligram to kilogram, solubility and reaction rate take center stage. We provide specifications for solvents, guidance on drying, and even sample reaction data when new users encounter challenges with reagent dissolution or catalyst choice. Since we synthesize each lot ourselves, feedback translates quickly to improved processes, both in production and in provided technical support.

While every user’s process varies, trends develop over time. Lower water content and high purity correlate with cleaner product isolation; lots with trace impurities produce more off-target material, so we screen for common contaminants before packaging. Storage stability tests under accelerated conditions guide our expiry dates, so there’s less risk of product degradation during longer research projects.

Why Consistent Quality Matters

Product quality isn’t just a marketing claim in our factory—it shapes whether chemists get reliable results or end up back at the drawing board. Over-purified analogs sometimes create more problems than they solve, while impure material throws off reaction yields and analytics. We found the best results with an HPLC purity just above 97%, but not so high that we sacrifice yield or ignore stability. Water and solvent content receive special attention, since both have outsized impact on coupling efficiency and downstream analytics.

Our commitment to direct synthesis of 2-Fluoro-4-Iodophenylboronic Acid lets us track every critical parameter, from reaction temperature to solvent removal rate. We maintain transparent batch records, and our QC team welcomes outside audits. More than one client has benchmarked our product against competitors and noted fewer “mystery peaks” on NMR and LC-MS readouts—those little details reduce troubleshooting time in both academic and industrial settings.

The Role of Boronic Acids in Medicinal and Materials Chemistry

General organoboron chemistry supports drug discovery, crop science, and materials innovation. In our experience, the rise in demand for halogenated and fluorinated arylboronic acids matches industry trends toward more complex small molecules. Medicinal chemists use 2-Fluoro-4-Iodophenylboronic Acid in developing kinase inhibitors, anti-cancer leads, and PET imaging agents. Materials teams probe its potential for embedding reactivity into polymers, sensors, and specialty plastics.

Feedback from customers highlights the importance of substitution pattern in determining physical, chemical, and biological properties. The combination of fluorine and iodine in this molecule allows for late-stage functionalization—something standard phenylboronic acids can’t deliver. This flexibility means fewer synthetic steps, easier structure-activity studies, and more efficient exploration of candidate molecules. It’s an approach that increases innovation while controlling costs, and plays to the strengths of a streamlined, on-site synthesis operation.

Environmental and Regulatory Considerations

Modern chemical manufacturing requires attention not only to product quality, but also to environmental and safety standards. We run closed production systems, using solvents we regularly recycle and reclaim. Waste minimization plans feature constant review, since boronic acids and their precursors aren’t always innocuous. For 2-Fluoro-4-Iodophenylboronic Acid, halogenated waste receives separate containerization and transport, and our analysts run regular checks for trace emissions. Documentation on each lot describes not only product specs but also regulatory compliance, risk assessment, and—when requested—traceability down to raw material origin.

In downstream applications, especially in API or agrochemical research, our clients count on accurately documented impurity profiles to preempt problems in GLP or GMP transfer. Every in-house technical report receives review by a multidisciplinary team, who combine synthetic know-how with regulatory experience across regional markets. The regulatory landscape keeps evolving, but internally we update SOPs in response, keeping customers a step ahead whether they’re prepping small batches for a screening run or scaling to commercial quantities.

Technical Support and Customer Collaboration

Direct manufacturing means we’re often the first stop when users hit snags or want to adapt an existing route. Our technical team fields questions ranging from reaction optimization to safety handling. We draw on in-house data: reaction condition matrices, side-product trends, and solvent compatibility tables collected by running pilot reactions ourselves. One change in our approach grew from feedback: offering early access to pilot lots for new projects so clients can flush out issues before committing to full-scale purchases.

Often, a simple conversation about catalyst selection or water content saves days of troubleshooting. We’ve found that open lines of communication lead to repeat business and smooth project timelines. Operating as a manufacturer—not a middleman—gives us the flexibility to adapt, shift priorities, or innovate purification methods in response to specific requests. New synthetic challenges often yield a better understanding of our own manufacturing process, creating a feedback loop that supports both operational efficiency and customer success.

Continuous Improvement and Looking Forward

Chemical manufacturing never stands still. Customer priorities change, regulations become more stringent, and new synthetic methodologies emerge. For our team, 2-Fluoro-4-Iodophenylboronic Acid represents both a technical achievement and a starting point for further development. We monitor advances in catalysis and functional group transformations that could open new applications. Our R&D team runs regular feasibility projects for new derivatives, learning from each production cycle to optimize both yield and purity.

Hands-on production experience translates into meaningful improvements across the board. With each new campaign, our analytics group documents the affect of incremental process tweaks—whether optimizing the timing of halogenation or adjusting the temperature swing during distillation. In a rapidly evolving industry, the ability to trace every variable and respond directly proves more valuable than chasing scale at the expense of flexibility. Our approach fosters innovation instead of locking in a rigid specification, while ensuring that each lot shipped performs as intended for the next user.

Final Thoughts from the Factory

Our perspective as a manufacturer places us at the intersection of chemistry, quality, and real-world problem solving. 2-Fluoro-4-Iodophenylboronic Acid isn’t just another container on a warehouse shelf; it represents hundreds of hours of development, constant process improvement, and daily customer conversations. Its chemical versatility, reliable performance in cross-coupling, and distinct substitution pattern set it apart from legacy boronic acids.

We maintain transparency in sourcing, process controls, and analytical reporting. This commitment inspires confidence and supports the developing needs of modern chemistry. Whether a research group needs a few grams for proof of concept work, or a process team scales to kilogram quantities, our manufacturing experience guides every interaction. We take pride in supporting the journey from initial synthetic challenge to project completion, striving to raise expectations for what a modern specialty chemical supplier delivers.