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2-(Di-Tert-Butylphosphino)Biphenyl

    • Product Name 2-(Di-Tert-Butylphosphino)Biphenyl
    • Alias [Di(adamantan-1-yl)phosphino][1,1'-biphenyl]-2-yl
    • Einecs 682-179-8
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry admin@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
    VTB
    Specifications

    HS Code

    856542

    Cas Number 398785-55-6
    Iupac Name 2-(Di-tert-butylphosphino)-1,1'-biphenyl
    Molecular Formula C22H31P
    Molecular Weight 326.46 g/mol
    Appearance Colorless to pale yellow liquid or solid
    Boiling Point Decomposes before boiling
    Solubility Soluble in common organic solvents (e.g., toluene, THF, ether)
    Storage Conditions Store under inert atmosphere (argon or nitrogen), protect from moisture and air
    Density 1.02 g/cm³ (approximate)
    Purity Typically available at ≥97%
    Smiles CC(C)(C)P(C1=CC=CC=C1C2=CC=CC=C2)(C(C)(C)C)C(C)(C)C
    Inchi InChI=1S/C22H31P/c1-21(2,3)23(22(4,5)6)20-16-12-11-15-19(20)18-14-10-9-13-17-18/h9-17H,1-6H3
    Refractive Index nD ~1.545 (estimated)
    Hazard Statements H315 (causes skin irritation), H319 (causes serious eye irritation)

    As an accredited 2-(Di-Tert-Butylphosphino)Biphenyl factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing The 1-gram quantity of 2-(Di-Tert-Butylphosphino)biphenyl is packaged in a sealed amber glass vial within a protective box.
    Shipping 2-(Di-Tert-Butylphosphino)Biphenyl is shipped in sealed containers under an inert atmosphere, typically argon or nitrogen, due to its air- and moisture-sensitivity. Packaging complies with chemical and safety regulations, and transport may require temperature control. Proper labeling and documentation ensure safe handling during transit and upon receipt.
    Storage 2-(Di-Tert-Butylphosphino)biphenyl should be stored in a tightly sealed container under an inert atmosphere, such as nitrogen or argon, to prevent oxidation. Keep it in a cool, dry place away from moisture, air, and sources of ignition. Storage in a refrigerator (2–8°C) is recommended. Handle under a fume hood using appropriate personal protective equipment (PPE).
    Application of 2-(Di-Tert-Butylphosphino)Biphenyl

    Applications of 2-(Di-Tert-Butylphosphino)Biphenyl in Industrial Manufacturing

    As the original producer of 2-(Di-Tert-Butylphosphino)Biphenyl, we supply the phosphine ligand to advanced sectors requiring precision and reliability in homogeneous catalysis systems. Below, we outline verified downstream industrial applications, detailing compliance requirements, formulation ratios, production integration points, and real finished goods achieved through our expertise and material traceability.

    1. Cross-Coupling Catalyst Production for Pharmaceutical Synthesis

    Drug manufacturers leverage this ligand for the formation of palladium and nickel complexes, supporting Suzuki, Buchwald-Hartwig, and Negishi couplings in GMP pharmaceutical APIs. Controlled molecular structure and reproducibility remain essential during synthesis of aryl and heteroaryl compounds, where ligand purity and lot validation influence scaffold selectivity, impurity profiles, and step yields across multi-ton campaigns. Only high-purity ligands can maintain the required batch-to-batch consistency in regulated drug substance processes.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for APIs
    • USP/NF monographs for residual metal and ligand limits
    • Ph. Eur. 5.21 Organometallic Catalysts Regulation
    • 21 CFR Part 211 (FDA cGMP for Finished Pharmaceuticals)

    Typical usage ratio

    • 0.5–5 mol% relative to palladium or nickel; dose tunes based on substrate and reaction optimization studies, with process transfer validated under scale-up

    Downstream process integration

    • Ligand addition occurs during pre-catalyst complex preparation or in situ introduction to the reaction vessel after substrate and base charging in API synthesis

    Final product types

    • Non-steroidal anti-inflammatory drug intermediates
    • Heterocyclic active pharmaceutical ingredients
    • Next-generation kinase inhibitors
    • Advanced generic and custom small-molecule drugs

    2. OLED Material Precursor Manufacturing

    Specialty electronics material producers require precise ligand-controlled metal complexes for high-purity OLED emitters and hole-transport layers. Here, the ligand forms a key intermediate in the assembly of metal-organic phosphors, dictating emission color, device efficiency, and material thermal stability. Uniform lot analysis and trace contaminant control directly impact panel lifetimes and binning consistency for commercial display and lighting OEMs, where every synthesis step faces end-use quality audits.

    Industry compliance standards

    • JEITA EM-7208 standard for organic semiconductors
    • QC protocols for heavy metal residues per RoHS Directive (2011/65/EU) Annex II
    • ISO 9001:2015 certified quality system for advanced material synthesis
    • IEC 62321 for determination of certain substances in electrotechnical products

    Typical usage ratio

    • 0.2–2.5 mol% with respect to transition metal center, depending on target emission wavelength and device structure; closely managed to deliver consistent batch photoluminescence characteristics

    Downstream process integration

    • Ligand coordinates with metal salts during controlled synthesis of emitter precursors; integrated prior to vacuum deposition or wet-processing of OLED thin films

    Final product types

    • Red, green, and blue OLED emitter complexes
    • Phosphorescent dopants for OLED displays
    • Organic hole-transport and electron-transport materials
    • Consumer and professional grade OLED display panels

    3. Fine Chemical Synthesis Catalysts (Agrochemical Intermediates)

    Producers of crop protection compounds employ this ligand for high-turnover cross-coupling processes to build complex aromatic and heterocyclic scaffolds. The ligand’s steric and electronic profile supports site-selective arylchloride activation, especially in routes where metal contamination and ligand residues can jeopardize regulatory registration or gloss house compliance in the value chain. Producers conduct extensive QC during co-catalyst formulation to manage both purity assurance and the fulfilment of stringent migratable element limits key to agrochemical registration.

    Industry compliance standards

    • ISO 17025-certified analytical control for trace metal and ligand residues
    • REACH (EC 1907/2006) registration and substance dossier
    • FAO/WHO specifications for technical-grade agrochemicals
    • CropLife International Quality Guidelines for raw material sourcing

    Typical usage ratio

    • 0.3–4 mol% relative to metal center, with adjustments based on target substrate functionalization and process residue analysis

    Downstream process integration

    • Used in in-situ preparation of metal catalyst during the formation of C-aryl and C-alkyl linkages, with addition prior to substrate feeding

    Final product types

    • Herbicide and fungicide intermediates
    • Active molecules for crop protection formulation
    • High-purity building blocks for regulated technicals
    • Customized seeds treatment actives

    4. Specialty Polymerization Catalyst Systems

    OEMs in conductive polymer and engineering thermoplastics depend on this phosphine ligand for the creation of bespoke transition-metal catalysts, increasing molecular weight control and functional group retention. Consistency in ligand grade and impurity removal forms the core of quality audits, as poorly characterized ligands can hamper both the polymerization rate and final end-use certification. Downstream, manufacturers track the ligand through ERP systems for supply chain transparency in large-batch synthesis campaigns.

    Industry compliance standards

    • ISO 14001 for environmental control at catalyst manufacturing
    • UL 94 certification for flame-retardant polymers
    • ASTM D5630 for residue on ignition in plastics
    • EN ISO 14855 for biodegradable polymer end-products, when relevant

    Typical usage ratio

    • 0.1–1.0 mol% depending on target molecular weight, monomer type, and desired catalyst activity, routinely fine-tuned based on pilot-plant trial feedback

    Downstream process integration

    • Ligand complexed with transition metals during catalyst pre-mix phase before polymerization run start; monitored for homogeneity and residual activity in polymer melt

    Final product types

    • Conductive polyacetylene and polyaniline grades
    • Custom polyarylenes and polyphenylenes
    • Engineering thermoplastics for electronics and automotive sectors
    • High-performance specialty copolymers

    5. Advanced Material R&D and Analytical Reference Standards

    Academic and industrial research institutes incorporate this ligand for the benchmarking of new homogeneous catalysis methodologies, supporting peer-reviewed studies and performance comparisons under reproducible conditions. The availability of tightly characterized, lot-traceable ligand batches supports determination of mechanistic parameters, validation of novel synthetic routes, and method transfer into commercial labs as reference standards.

    Industry compliance standards

    • GLP (OECD Principles of Good Laboratory Practice) for material characterization
    • ISO 17034:2016 for reference material producers
    • IUPAC recommendations for comparative catalytic activity testing
    • Institutional protocols for hazardous reagent handling

    Typical usage ratio

    • 0.1–2 mol% based on substrate, reaction scale, and test objective, routinely recorded in lab notebooks for method reproducibility

    Downstream process integration

    • Direct addition to test reactions or catalytic cycle studies, with sample tracking via LIMS through to final report generation

    Final product types

    • Publication-quality catalysis data
    • Catalyst libraries for R&D
    • Reference standards for QC in commercial catalyst production
    • Patentable process know-how and new chemical entities
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    Certification & Compliance
    More Introduction

    2-(Di-Tert-Butylphosphino)Biphenyl: Expert Insights from the Manufacturer’s Floor

    Why Chemists Trust Our 2-(Di-Tert-Butylphosphino)Biphenyl

    Everyone working daily with phosphine ligands knows how a single choice in structure can shape the outcome of a catalytic reaction. At our site, we have focused years of practical know-how and careful control to create 2-(Di-Tert-Butylphosphino)biphenyl, a ligand with character forged by precision. Those who’re searching for reliable performance in cross-coupling or hydrogenation won’t find this just anywhere. We built our production with the real work on the bench in mind, so the chemist doesn’t have to lose time troubleshooting batch inconsistencies or purity issues.

    Over plenty of runs, feedback from fellow synthetic chemists sounded similar. Time after time, they look for a phosphine ligand that holds up under pressure—whether it’s a hot Suzuki–Miyaura or a demanding Buchwald–Hartwig coupling run at scale. Our workers see the rigorous testing firsthand. Every lot gets examined for crystalline appearance, proper melting properties, and purity by NMR and elemental analysis. We’ve baked consistency into each step, from controlled air-free handling to attentive packaging, because we know too well what a tiny variation in impurity or moisture can do to a catalyst’s productivity.

    Examining Core Features: Structure, Format, and Benefits in Research

    This molecule stands out for its distinctive structure. Attaching two tert-butyl groups onto the phosphorus atom delivers robust electron-donating properties, which changes both reactivity and selectivity in palladium and other transition metal–catalyzed processes. The parent biphenyl backbone brings steric bulk while staying planar enough for orderly coordination, which is exactly what unlocks higher rates in difficult cross-coupling cycles.

    From the manufacturer’s perspective, purity in this kind of phosphine ligand isn’t just a bonus—it’s a requirement for reliable catalysis. Oxygen and water sensitivity means conventional handling rarely cuts it. We rely on glovebox isolation and Schlenk apparatus, ensuring every unit leaves the plant free from detrimental impurities. Chemists doing real reactions notice: sharper yields, more robust catalytic turnover, and fewer setbacks from catalyst poisoning. We’ve heard from those running complex heteroaryl-aryl couplings or C–N bond formations, who had trouble getting reproducibility from commercial distributors, that our process control made all the difference.

    Prompt solubility in standard organic solvents gives researchers flexibility. Not every ligand dissolves so compared to some biphenyl phosphines with bulkier or more rigid substituents, this model moves directly into solution and mixes thoroughly, setting up for even metal–ligand complexation. Our firsthand reports from process chemists back this up—they get cleaner solutions and more predictable behavior, reducing the need for pre-drying and extended degassing steps.

    Specs Shaped by Experience, Not Guesswork

    Through years of feedback and our own round-the-clock runs, we’ve standardized batch sizes to suit both academic discovery and industrial synthesis. Our team regularly produces multi-kilogram lots, applying purification protocols that remove any traces of oxidized byproducts. This habit of scaling up in-house, not simply repackaging drums, stems from participating directly in the problem-solving process with catalyst developers. If a batch needs additional quality checks or testing under custom conditions, we dial in our workflow to fit.

    By using high-resolution NMR and phosphorus analysis directly onsite, along with HPLC profiles, any anomalous batch stands out instantly—long before it gets anywhere near a researcher’s flask. Every run meets reference standards, with a melt range as expected for authentic material. Technicians and chemists from our group review extra spectral data, connecting findings to the physical performance of the ligand in mainstay reactions.

    Moisture uptake worries many customers. Our experience leads us to package under argon with high-barrier foil to guard against degradation in transit or storage. Labels on each lot come with a precise manufacture date and suggested handling notes born from our lab mishaps and customer consultation. This ensures colleagues anywhere get exactly the active product our own specialists rely on for metal-catalyzed work.

    Common Uses Rooted in Real-World Synthesis

    You find 2-(Di-Tert-Butylphosphino)biphenyl pushing reaction boundaries in the hands of academic and process chemists. In Suzuki–Miyaura couplings, it increases rate and selectivity, especially for those difficult-to-activate aryl chlorides and sterically hindered substrates. The ligand finds similar utility in Buchwald–Hartwig aminations, where the tert-butyl groups protect against deactivation and deliver more active catalyst cycles, useful when scaling pharmaceutical intermediates or agrochemical actives. Synthetic chemists running multiple-step sequences wind up with higher purity products and fewer side reactions.

    Our records confirm hundreds of published applications citing the same profile: researchers use it to boost turnover numbers, minimize off-target arylation, and keep unwanted byproducts from fussy transition metals in check. Beyond common cross-coupling, several groups apply the ligand in asymmetric hydrogenation, taking advantage of its strong donating character and unique binding angle around the metal. The actual finished product—pure, stable, exactly as described—lets scientists spend more time on optimization, less on troubleshooting ligand decay or solubility hassles.

    Not every ligand on the shelf gives the same leverage in catalysis. We’ve worked with users switching away from less hindered phosphines who saw higher catalyst lifetimes once adopting our 2-(Di-Tert-Butylphosphino)biphenyl. In some of the most complex aryl–aryl couplings, this ligand enabled problematic couplings to run to full conversion, saving repeated experiment cycles and costly palladium inputs.

    How Our Version Compares to Others in the Market

    Chemists who come directly to a manufacturer often find that bulk suppliers and traders don’t know what’s in the bottle or how long it’s been repacked. We’ve seen firsthand how uncontrolled storage and casual handling introduce subtle problems. Many generic ligands carry invisible traces of air or decomposition, not always obvious until the experiment fails. Our team’s direct accountability ensures a transparency that cannot be duplicated by distributors stocking a generic label.

    Compared to aryl mono-phosphines or smaller alkyl-substituted phosphinobiphenyls, 2-(Di-Tert-Butylphosphino) biphenyl shows a balance of strong electron donation and steric protection, which in practice leads to broader compatibility with weakly activated aryl halides and hard-to-couple systems. We know this both from our own development runs and from published head-to-heads. Some rival materials (such as di-cyclohexylphosphino biphenyls) can offer similar rates in limited circumstances, but the bulk and electronics of tert-butyl groups prove more robust to temperature shifts and solution quality through multiple runs.

    Research clients often point out the practical differences. Material straight from factory control—never resold or repackaged—remains free-flowing and ready to use, without clumping or partial oxidation. Each bottle leaving our line gets its integrity confirmed by staff who can read an NMR and troubleshoot the rare out-of-profile spectrum. We don’t ship intermediates still waiting on full phosphine analysis; what moves from our barrier packing to your hood is what we would weigh out for our own reactions.

    Direct Solutions for the Real Issues Chemists Face

    Any chemist who’s run into a batch of degraded ligand understands the real cost of impurity and decomposition. Failed couplings set projects back days, sometimes weeks—lost time no process developer or discovery group wants. That’s why we go far beyond labeling purity: we invest in air-free production lines, hands-on batch documentation, and real-time storage assessment.

    For people new to transition-metal catalysis, we discuss how to handle and store their ligands, based on years handling this exact molecule. Our suggestions go beyond textbook protocol, focusing on real-life circumstances where delays, variable glovebox atmosphere, or unexpected downtime can threaten the quality of sensitive reagents.

    We also work directly with end-users to refine our logistics. If a customer needs a custom batch size or an atypical packaging format to match their scale-up or automation setup, we adapt our process, not just for one-off shipments but for long-term supply. Our logistics team has built global relationships with specialty couriers, ensuring that these oxygen-sensitive materials reach labs with full protection from heat, vibration, and accidental exposure.

    Any technical issue encountered by our chemical producer clients—catalyst stalling, lower than predicted yield, visual decomposition—gets real attention from the team that produced the ligand in the factory, not just from a sales desk. Technical data, collaborative troubleshooting, and real-world lab experience back up all communication. We share handling and purification tricks learned over hundreds of production cycles so that even ambitious synthetic challenges benefit directly from our background.

    Commitment to Traceability and Consistent Quality

    Every container of our 2-(Di-Tert-Butylphosphino)biphenyl leaves with a full traceable production record. From the raw materials to the packed final product, each operation is logged, allowing chemists and procurement teams to trace back every successful run to the source. Our documentation includes process details, batch operators, and a history of quality checkpoints. Direct sourcing from the manufacturer lets users sidestep the uncertainty that comes from middlemen relabeling and repacking. We’ve had clients solve long-standing reproducibility issues simply by starting with direct-from-plant ligands, bringing their reactions into line with published work instead of spending weeks diagnosing unknown variables.

    Our group doesn’t shortcut on batch records or release checks. Our staff have run the same coupling and hydrogenation tests that clients do, and we use those results to refine purification parameters or storage instructions. If a production run doesn’t match expected performance, it doesn’t leave the facility. The people making, testing, and shipping this material understand both the molecular structure and the roles it plays in catalytic discovery or process development, and this hands-on involvement makes a difference that generic sources cannot replicate.

    Continuous Feedback and Future Improvements

    Feedback from scientists using our ligand continues to shape our process improvement. A good number of customers who initially purchased standard packs now rely on larger, custom-sized shipments, supported by our ability to scale without quality compromise. Their suggestions—whether it’s a tweak in packaging, access to technical bulletins, or a request for in-depth spectral data—drive ongoing updates to our delivery and support systems.

    We invest continually in analytical methods. Onsite NMR, phosphorus-specific detectors, and emerging chromatographic tools help us catch subtle deviations before they become issues. Many staffers come from academic or process chemistry backgrounds, so the dialogue with customers has real substance; questions aren’t passed off to generic reps. If an unusual NMR signal or solubility problem arises, actual production chemists help diagnose and resolve the matter, based on practical expertise and a working familiarity with ligand behavior under different synthetic conditions.

    We participate in broader discussion among ligand manufacturers, staying up to date with those who contribute to improvements in materials handling, packaging science, and phosphine ligand stability. Sharing best practices among manufacturers, not just resellers, keeps our processes current and able to meet the highest standards for every order.

    Environmental and Safety Responsibilities: From Factory to Lab

    Handlers and regulatory teams deal with the real-world hazards of phosphorus chemicals every day. We saw early on that large-scale manufacture of 2-(Di-Tert-Butylphosphino)biphenyl produced very specific waste streams, making containment and neutralization priorities. Investment in scrubber systems, proper atmospheric monitoring, and low-emission batch reactors minimizes risks both to worker safety and to the environment. Training programs keep our staff fully aware of safe handling and emergency responses. We’d rather retrain a new staffer for weeks than have anyone take shortcuts with reactive intermediates.

    On the customer’s side, we provide realistic storage and safety guidance. Our material ships in containers chosen for actual danger mitigation, not just regulatory compliance. We welcome audits and supply customers with up-to-date data on handling practices and shelf-life. Clients who asked for additional regulatory documentation, custom SDS forms, or technical reviews have always gotten them. Our experience, gained from handling many kilograms yearly, provides a level of detail that satisfies even the strictest chemical safety officers or internal audit teams.

    A Manufacturer’s Perspective on Maintaining Industry Confidence

    We know that most synthetic chemists aren’t just searching for a lower price, but for trust that the ligand they weigh out matches literature and peers’ experience. Working with 2-(Di-Tert-Butylphosphino)biphenyl in both lab and large-scale chemical facilities taught us this lesson repeatedly. High-purity, consistently performing ligand, packed and shipped with a deep understanding of its sensitivity, keeps projects on track. Direct relationships, responsive technical support, transparent records, and a realistic focus on problem-solving ensure the product meets the needs of advanced research and fast-paced process environments.

    Standing as manufacturer—not just as another node in a supply chain—we bring an added value to every batch. The learning from each lot improves the next. Chemists pressing toward new processes or cleaner catalytic results benefit from this loop of experience, and every bottle represents that accumulated knowledge. Our 2-(Di-Tert-Butylphosphino)biphenyl becomes more than a commodity; it’s a partner in innovation, backed by real accountability and an open-door rapport with the researchers who use it.