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HS Code |
587887 |
| Product Name | 1-(2-Bromomethyl)-3-(Trifluoromethyl)Benzene |
| Cas Number | 143782-36-1 |
| Molecular Formula | C8H6BrF3 |
| Molecular Weight | 239.03 g/mol |
| Appearance | Colorless to pale yellow liquid |
| Boiling Point | 197-199 °C |
| Density | 1.59 g/cm³ |
| Purity | Typically ≥98% |
| Solubility | Insoluble in water, soluble in organic solvents |
| Refractive Index | 1.530 - 1.540 |
| Flash Point | 84 °C |
| Synonyms | α-Bromomethyl-3-(trifluoromethyl)toluene |
| Smiles | C1=CC(=CC(=C1)C(F)(F)F)CBr |
| Inchikey | UXKBCFFTSANONR-UHFFFAOYSA-N |
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In the search for reliable building blocks in research and manufacturing, some chemicals play a bigger role than their names suggest. 1-(2-Bromomethyl)-3-(Trifluoromethyl)Benzene stands among these—quietly anchoring reaction paths that drive both innovation and practical progress in chemistry. With a formula of C8H6BrF3 and a molecular weight just above 255 g/mol, this compound holds a place in my own lab stories, particularly as we hunted for reactants that bridge the gap between affordable cost and dependable results.
Ask anyone who works with benzylic bromides and you’ll hear stories about unwanted side reactions, greasy impurities, or even shipping problems because of instability. The appeal of moving a trifluoromethyl group to the ring changes a lot. My hands-on experience tells me that the electron-withdrawing power from the CF3 at the meta position shapes the benzylic bromide’s reactivity. This feature lets it serve as a versatile intermediate for nucleophilic substitutions, boosting both selectivity and safety during couplings or alkylations. Chemists see cleaner transformations, reduced byproduct formation, and better product isolation—key outcomes when developing small-scale pharmaceutical targets or scaling up for pilot production.
Whether synthesizing active ingredients or specialty materials, reliable precursors matter. 1-(2-Bromomethyl)-3-(Trifluoromethyl)Benzene offers an easy point of attachment for a variety of nucleophiles. Its trifluoromethyl group influences polarity and metabolic resistance—frequently sought-after features in drug discovery. I remember projects where swapping in a CF3-substituted compound allowed teams to push a molecule through metabolic studies without worrying about rapid breakdown or unwanted transformations. This property helps in tuning oral bioavailability, modulating lipophilicity, and tweaking central nervous system penetration. The benzyl bromide remains stable during storage, yet reacts smoothly during etherifications and aminations where milder conditions protect delicate functional groups elsewhere in a molecule.
It’s not about chasing the purest numbers in a data sheet; it’s about practical suitability. Researchers—whether in academia or industry—often talk about purity in terms of real-world outcome, not decimal points. The product I’ve handled typically arrives as a clear, colorless to pale-yellow liquid, with minimal visible impurities. Boiling point fits conveniently within an accessible range, which keeps heat-sensitive processes simple and cost-effective. High-quality material reduces the frequency and expense tied to purification, which becomes urgent when you’re up against a deadline. Reliable thin-layer chromatography behavior, consistent spectral signatures, and solid batch-to-batch repeatability speed protocols and free up resources that would otherwise orbit around troubleshooting.
Comparison with standard benzylic bromides highlights why this compound draws attention beyond specialty settings. Substituting hydrogen with trifluoromethyl decreases unwanted radical reactions and side-chain oxidations during multi-step syntheses, especially under transition metal-catalyzed conditions. My own reactions showed a marked drop in homocoupling byproducts, making post-reaction purification much less of a slog. Other benzylic bromides often drag along halogen-exchange byproducts and demand tougher isolation strategies. With this particular compound, both the degree and controllability of substitution reactions beat more basic analogs, saving time and headaches downstream.
Plenty of attention goes to how a product gets made, not just what results look like. My work has relied on sources where synthesis follows routes that minimize residual metals, unreacted starting material, and non-volatile residue—shortening the setup for downstream chemistry. During trials, we found it stores well when sealed and kept away from light, supporting project stability over months rather than days. Throughout the process, ease of weighing and dispensing matters; rare spills and minimal odor help set a safer work environment. When diluted in standard solvents like dichloromethane or THF, the compound mixes cleanly, reducing physical loss and time spent on non-reaction logistics.
Most laboratories today juggle strict safety profiles alongside ambitious reaction schemes. One of the lessons learned from hands-on use is that the trifluoromethyl group can cut down on the need for excessive protective protocols—not because risks vanish, but because reactivity trends become more predictable. Less scatter in reactivity trims down wasted experiments and lets researchers wrap up series more efficiently. The presence of the CF3 group also shrinks the risk of aromatic substitution in follow-up chemistry, opening the way for cleaner building block construction in medicinal chemistry.
Chemical research moves fast, but it only progresses when the starting point stays constant. In the bench-to-pilot process, we often saw setbacks whenever commercial batches varied. With reliable sources of 1-(2-Bromomethyl)-3-(Trifluoromethyl)Benzene, repeat experiments mirrored one another—no surprise colors, no off-odors, no cryptic spectroscopic outliers. I have watched postgrads avoid late-night reruns, shaving off excess downtime that usually plagued our shared setups with less predictable substitutes. That kind of trust turns into more ambitious reaction design, letting groups pursue bolder screening cascades for new therapeutics or materials.
The claim that “all benzylic bromides work the same” falls flat every time synthesis precision matters. Some lower-cost variants give inconsistent yields or encourage decomposition, leaving behind devilishly sticky residues. This compound, by contrast, tends to clean up without fuss using common extractive washes. In aromatic substitution and palladium-catalyzed transformations, the CF3 group at the three position brings out subtle improvements in chemo- and regioselectivity during catalyst-guided couplings. Those incremental gains, almost invisible to those outside the lab, grow massive when hundreds of analogs need assembly.
The word from colleagues in pharmaceutical and agrochemical sectors aligns with these hands-on memories. Projects involving radiolabeling, isotopic tagging, or preparation of fluorinated targets find real value in this intermediate. Fluorine’s place in drug chemistry is well documented—protecting molecules against metabolic degradation and increasing interaction with enzyme sites. The balance of stability and controlled reactivity lets teams produce grams to kilograms of modified scaffolds, with less investment in repeated purification cycles. Cleaner intermediate pools mean that downstream biological evaluations start with confidence, not constant doubt about homogeneity.
No synthesis goes according to plan every single time. Unexpected side products or sluggish reactions can kill enthusiasm quickly. 1-(2-Bromomethyl)-3-(Trifluoromethyl)Benzene’s physical properties helped us recover from sticky situations: if a reaction stalled, a tweak in base or solvent concentration often brought things back on track, usually because competing elimination or rearrangement stayed minimal. Other benzylic halides sometimes went off the rails when reaction vessels ran a few degrees higher than intended. Here, the trifluoromethyl effect modulated reaction progress, so we lost less material and rarely faced surging byproducts that needed aggressive cleanup.
For many, direct price tags matter less than lifecycle value. We saw immediate savings with this compound because of minimized waste and higher recovery rates after purification. Fewer failed jars and cheaper preparative chromatography came up more than once in group meetings. As teams race to meet ever-tighter delivery windows, skipping whole troubleshooting cycles saved both morale and money—the quiet value of a reagent that “just works,” week after week.
No two routes through organic synthesis look exactly the same. What remains constant is the need for intermediates that can flex with changing goals. This compound slots neatly into workflows aimed at both benzylic substitutions and more complex, multi-step modifications. Its dual role as a halide electrophile and electron-withdrawing scaffold makes it an asset in efforts to craft diversity sets for SAR (structure-activity relationship) studies or lead optimization programs. In a company prepping regulatory samples, crews lean on such consistency for documentation and batch-release testing.
Every chemist bears responsibility for what eventually leaves the flask. The demand for more sustainable, less hazardous processes influences every product choice. This intermediate, on account of its selectivity and reactivity, plays into greener synthesis designs. Reduced byproduct formation and the potential for solvent recycling after workup echo strong sustainability. Projects aiming for greener “atom economy” or fewer chromatography cycles find the benefits add up over time. By selecting such reagents, teams can drive process intensification without drift into wasteful or dangerous side-reactions often triggered by less selective analogs.
Reproducibility requires trust in what arrives by courier or truck. My groups always valued vendors willing to work with us on custom batch sizes and transparent quality control. It’s one thing to read a certificate of analysis; it’s another to open a delivered sample and see behavior match claim. Reliable delivery and batch homogeneity smoothed coordination between remote and central labs, especially across international projects. The difference shows up in day-to-day productivity and in the confidence with which bigger, riskier projects move forward.
Each year, somewhere in the world, a team stumbles into a yield drop or characterized side product that kicks off days of detective work. My own experiences point to clear patterns: using this compound, we saw reproducible NMR peaks, no residual starting material, and simpler isolation with basic liquid/liquid partitioning. The time recovered in not rerunning columns or adjusting reaction stoichiometry is time reinvested into what actually matters—exploring novel chemistry, not retracing old steps.
Looking forward, I see room for this intermediate far beyond current pharmaceutical or agrochemical rings. Researchers in electronic materials need robust, highly fluorinated compounds to build next-generation polymers and sensors. The predictable handling profile and controlled reactivity open routes to such materials. My early conversations with teams outside pharma hint at cross-disciplinary interest—engineering new coatings, smart surfaces, and photonic materials where the old halides fail. Careful documentation of crystallization, solvent compatibility, and reactivity trends turns into published protocols others can adopt, moving the whole field forward without wasteful repetition.
As much as this compound ticks boxes in bench work and scale-up, it comes with learning curves and challenges. Handling any benzylic bromide requires respect for toxicity and reactivity, and not every lab has ventilation or spill containment up to scratch. Training makes all the difference—lab teams need both theoretical guidelines and practical safety checks. The cost of regulatory filings and raw material sourcing also plays into which sectors move first. Yet time after time, ease of reproducibility and waste reduction seem to cover those extra upfront costs, especially when teams face strict regulatory or environmental standards.
It’s never been more important to bridge the conversation between process chemists, safety assessors, and scale-up partners. Sharing insights from the bench—like preferred solvent systems or post-reaction treatments—builds both safety and efficiency. Launching training sessions, both in the lab and on the job, makes the adoption curve gentler for newer staff. Open access to application notes, troubleshooting guides, and case studies helps level the playing field. Connecting suppliers directly to end-users, allowing for feedback loops that highlight any recurring pain points or wish-list items, shapes next-generation sourcing—and can steer moves toward more environmentally friendly production and packaging.
In my view, using advanced intermediates like 1-(2-Bromomethyl)-3-(Trifluoromethyl)Benzene comes with the responsibility to track every step—both for the safety of research colleagues and for the wider public. Regular auditing of reactant storage, waste disposal practices, and downstream product assessment reduces risk and wins trust from stakeholders inside and outside the lab. Transparent record-keeping supports both reproducibility and regulatory compliance, helping to drive not just efficient science but also safe and responsible industrial progress.
1-(2-Bromomethyl)-3-(Trifluoromethyl)Benzene doesn’t usually show up front and center in glossy promotional brochures or conference seminars. Yet based on my own experience, and decades of collective community feedback, compounds like it form the backbone of progress—in pharmaceuticals, agricultural chemistry, materials engineering, and beyond. Their tale, told in every successful experiment, reflects a lesson learned the hard way: the right tools, built with reliability and flexibility, let research and industry move beyond barriers into the next era of discovery.