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HS Code |
144399 |
| Chemical Name | 1-Bromo-3-(tert-Butyldimethylsiloxy)benzene |
| Cas Number | 132734-67-9 |
| Molecular Formula | C12H19BrOSi |
| Molecular Weight | 286.28 g/mol |
| Appearance | Colorless to pale yellow liquid |
| Density | 1.19 g/mL at 25°C |
| Purity | Typically ≥ 97% |
| Smiles | CC(C)(C)[Si](C)(C)Oc1cccc(c1)Br |
| Inchi | InChI=1S/C12H19BrOSi/c1-12(2,3)15(4,5)14-11-8-6-7-10(13)9-11/h6-9H,1-5H3 |
| Synonyms | 3-Bromo-phenol tert-butyldimethylsilyl ether |
| Refractive Index | n20/D 1.548 (literature value, approximate) |
| Storage Conditions | Store under inert atmosphere, at 2-8°C |
As an accredited 1-Bromo-3-(Tert-Butyldimethylsiloxy)Benzene factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
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Chemists face a tough balance: getting just the right reactivity in a molecule’s backbone while making sure parts of the molecule stay untouched. 1-Bromo-3-(tert-butyldimethylsiloxy)benzene offers a practical solution through its clever use of protecting group chemistry. The tert-butyldimethylsilyl (TBDMS) ether locks down the phenolic oxygen, and the bromo substituent presents an active handle for cross-coupling or other transformations. This clever pairing turns a tricky starting material into a reliable launching pad for numerous synthesis projects.
There’s a certain relief when a compound provides dependable selectivity in both laboratory research and scale-up. Students and professionals alike run into headaches when phenolic impurities pop up mid-reaction or purification. From my years working at the bench, it’s clear that a robust protecting group does more than just lower stress—it can save entire weeks of effort downstream. A benzene ring with a bromo group on one carbon and a robust silyl ether occupying the meta position solves two big problems: how to keep phenol-derived sites protected and how to introduce tailored functionality through the bromide.
Model chemists lean on 1-Bromo-3-(tert-butyldimethylsiloxy)benzene to streamline syntheses. The molecule’s backbone—a benzene ring with a bromine and a silyl ether—avoids unnecessary complexity and has proven reliable in both aromatic substitution and palladium-catalyzed couplings. The bromo group activates the aromatic ring for Suzuki or Heck chemistry. The TBDMS group stays intact under most reaction conditions—acidic, neutral, or even mildly basic—so it guards against unwanted side reactions. Every experienced chemist eventually finds out the hard way how tricky phenols can behave under oxidative or basic conditions, so having a sturdy ether in place is more than just a convenience. It’s a necessity.
What matters to a working chemist goes far beyond a line in a manual. On the bench, pure 1-Bromo-3-(tert-butyldimethylsiloxy)benzene appears as a colorless or pale straw liquid or light solid, and it stores well under dry, inert conditions. It’s stable in glassware, doesn’t clump in the bottle, and handles easily with standard pipettes or spatulas—qualities anyone in a real lab can appreciate. TLC analysis remains straightforward, UV detection is simple, and loss on drying remains minimal if handled correctly. In practice, the product’s melting point and NMR profile clearly match literature references. No one wants to troubleshoot inconsistencies halfway through a synthesis, so these routine but crucial details matter over countless runs.
Why not just stick with 1-bromo-3-hydroxybenzene or a similar precursor? In my own hands-on work, switching from ready-oxidizable phenols to their silyl-protected analogs cleaned up reactions. Fewer side products cropped up, and columns ran faster. Too often, labs get bogged down in cleaning up messes from cross-reacting phenolic intermediates. Silyl ethers like the TBDMS group solve that problem by standing firm until a final deprotection step, returning the free phenol when actually needed. Other bulky protecting groups may add cost, but TBDMS is an economical compromise between stability and ease of removal, usually with a fluoride salt or mild acid. Less-reactive methyl or benzyl ethers don’t hold up the same way through heavy-duty couplings, so you save time and money while boosting overall yield.
Cross-coupling, functionalization, and structure-based diversification all benefit from the careful design of this compound. Chemists in medicinal, material, and natural product chemistry reach for 1-Bromo-3-(tert-butyldimethylsiloxy)benzene in targeted syntheses. It turns up when a clean substitution pattern is necessary for building more complex aromatic systems. The ortho/para director locked into one position and the bromine provides precision for Ir- or Pd-catalyzed transformations. Students in academic labs find that, after dozens of runs with unprotected phenols leading to frustration, switching to the silyl-protected analog produces more consistent outcomes and less variation in analytical results.
From a practical perspective, this product supports a wide range of transformations. Suzuki-Miyaura couplings work smoothly, with the silyl group holding firm through basic and oxidative cycles. Chan-Lam and Buchwald-Hartwig amination protocols also integrate well with this molecule. Its reactivity enables the installation of aryl, vinyl, or alkynyl fragments at the bromine site, all without risking unwanted deprotection or byproducts. After these transformations, removal of the tert-butyldimethylsilyl group can be accomplished with controlled conditions tailored for scale—HF or TBAF in THF are common laboratory choices, but milder protocols exist for more sensitive scales.
From small undergraduate experiments to the synthesis of advanced pharmaceutical intermediates, clean starting materials make a measurable difference. Chemists expect no less than high purity and a sharp, well-resolved spectrum. Commercial batches of 1-Bromo-3-(tert-butyldimethylsiloxy)benzene consistently match reference NMR and IR spectra. Laboratories look for the absence of free phenol by both HPLC and TLC. Having pure, predictable material reduces troubleshooting and supports scalability—a factor of real economic importance. The compound’s modest volatility and stable shelf life under nitrogen storage means researchers don’t worry about costly waste or frequent reordering.
No molecule comes without drawbacks. The silyl ether, while sturdy, won’t withstand strong acid or F+ sources. Anyone working with demanding oxidants must plan accordingly to avoid premature deprotection. Supply chain interruptions provide another real-world consideration; chemists value a reliable supplier network that maintains quality and lot-to-lot consistency.
Many researchers—myself included—learn that quick, early wins in the lab often depend less on novel chemistry and more on trustworthy materials. There’s a satisfaction in watching a clear vial of 1-Bromo-3-(tert-butyldimethylsiloxy)benzene dissolve cleanly in standard solvents, knowing the next steps will proceed as planned. Mistakes often reveal themselves in poor choice of starting material. Picking the right protected intermediate prevents avoidable frustrations, supports reproducibility, and boosts morale for everyone at the bench.
The demand for this specific compound reflects broad trends in organic chemistry. More efficient, modular syntheses feature heavily in both drug discovery and advanced materials research. Fast-moving fields like medicinal chemistry thrive on intermediates able to handle complex, multi-step sequences without constant repurification. Here, 1-Bromo-3-(tert-butyldimethylsiloxy)benzene stands out as a modern building block. Its robustness and tractability enable a wide scope without repeated recourse to protective group chemistry. Less time spent re-working reactions means faster routes to publication, patent, or product.
Every solvent, reagent, or intermediate coming through a lab presents its own risks and environmental impacts. Sensible handling practices—dry, inert storage, careful waste segregation, and appropriate PPE—are a must. Transparent supply chains allow for better handling of unforeseen hazards or regulatory developments in specialty chemicals. Yet compared to more reactive halogenated intermediates, this product’s stability reduces some risks. Careful routine inspection ensures leaks or spills are caught before they turn into bigger problems.
Working around troublesome functional groups inspires plenty of creative strategies. Protecting phenols as silyl ethers isn’t new, but combining that approach with a bromo handle lays efficient groundwork for selective chemistry. Chemists facing low yields with free phenols often find their results improve with the adoption of a silyl-protected analog, cutting out peroxidation or unwanted side products. Modifying reaction protocols to accommodate the stability of the TBDMS ether cuts down both on errors and the frequency of returning to the drawing board. Opportunities exist to broaden the utility of this product even further through alternative deprotection strategies—milder reagents, greener solvents, or even enzymatic approaches. Research teams interested in sustainability are already exploring fluoride-free deprotection to reduce hazardous waste, contributing valuable new knowledge to the field.
As global research teams press forward, ready access to robust intermediates like 1-Bromo-3-(tert-butyldimethylsiloxy)benzene influences the shape of new discoveries. This product lets chemists zero in on structure, reactivity, and specificity without getting bogged down by problematic functional group reactivity. Over the years, the number of novel compounds achievable in just a few steps has grown thanks to the development and wide adoption of reliable intermediates. Today’s labs—both academic and industrial—are building on this tradition.
There’s a certain joy in working with chemicals that deliver on their promise. For students embarking on total syntheses or professionals advancing key intermediates, the transition from early planning to finished product gets shorter as nuisance issues disappear. 1-Bromo-3-(tert-butyldimethylsiloxy)benzene isn’t just another item on a shelf, it’s a strategic decision toward better reaction efficiency and less wasted effort. Professionals find not only do runs go more smoothly, but analytical work—NMR, MS, IR—returns less ambiguity. Cleaner chemistry begets faster progress, and that’s something every researcher values.
By adopting sturdy, reliable intermediates, we open doors to more complicated molecular architectures. Improvements in protecting group chemistry run parallel to innovations in catalysis and process optimization. Labs growing the next generation of chemists rely on products that offer teaching value along with practical application. Young scientists learn essential lessons about stepwise strategy, troubleshooting, and waste reduction. The best intermediates reinforce these lessons by actually working—every time, not just once.
The marketplace for specialty chemicals rewards products that stay relevant across competing fields. 1-Bromo-3-(tert-butyldimethylsiloxy)benzene has gained a foothold due to its consistent value in drug discovery pipelines, polymer functionalization, and material science. Start-up companies and university labs favor robust, low-waste intermediates with predictable performance, freeing time for creative pursuits rather than trouble-shooting. This compound doesn’t limit research to one niche. Instead, it supports a shared foundation for innovation in disciplines like high-value synthetic materials, optoelectronics, and fragment-based lead discovery.
Strong partnerships between product suppliers and end-users make a difference in reproducibility and progress. Feedback from laboratories encourages improvements in manufacturing and packaging. Experience has shown that small tweaks—a tighter cap, better lot tracking, or improved documentation—have ripple effects on research quality. Supply partners who listen and adapt to these needs drive steady improvements. End-users see the gains in time saved and fewer interruptions due to supply chain noise.
Access to high-quality reagents transforms the landscape of chemical innovation. 1-Bromo-3-(tert-butyldimethylsiloxy)benzene exemplifies this shift. It brings together robust protecting group strategy, ease of functionalization, and broad compatibility with modern catalysis. Every success in the field—from a smooth column to a crisp NMR spectrum—can trace its roots back to a smart choice at the outset. Researchers who think carefully about their starting materials see the effects ripple forward. Less wasted time, cleaner reactions, and smoother scale-up aren’t lofty ideals—they’re day-to-day realities shaped by selecting the right tools for the job.