Thiophene Building Blocks & Sulfur Heterocycles
Welcome to OUHE Technology’s catalog of thiophene building blocks and sulfur heterocycles. We supply high-purity halothiophenes, thiopheneboronic acids, and thienyl carboxylic acids essential for transition metal-catalyzed cross-couplings, directed C-H activations, and drug discovery workflows. Use our advanced search bar to filter by CAS number or product name to secure your target building blocks.
High Volatility and Moisture-Sensitive Solid State of Thienyl Synthons
Many low molecular weight thiophene derivatives are volatile liquids with distinct sulfurous odors, while solid thienyl salts are highly hygroscopic. Exposure to atmospheric moisture can cause hydrolytic degradation and clumping of active synthons. At OUHE Technology, we prevent evaporative loss and moisture clumping by packaging our high-purity thiophene building blocks under dry nitrogen in moisture-proof, hermetically sealed containers, preserving active halogen and boronic handles.
Structural Classes: From Cross-Coupling Partners to Bioisosteres
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Halothiophenes (Bromo-, Iodo-substituted): Prime coupling partners designed for transition metal-catalyzed Suzuki, Stille, and direct arylation couplings.
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Thiopheneboronic Acids & Esters: Boronated intermediates serving as stable, non-dehydrating nucleophilic partners in classic Suzuki-Miyaura cross-couplings.
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Thienyl Carboxylic Acids & Amines: Highly functionalized heterocyclic scaffolds designed as benzene bioisosteres to enhance metabolic stability and lipophilicity in active pharmaceutical ingredients (APIs).
C-2/C-5 Regioselective Substitution and Isomeric Purity Assurance
The electron-rich thiophene ring undergoes electrophilic aromatic substitution (EAS) preferentially at the C-2 and C-5 positions. Introducing substituents onto specific carbon atoms requires precise control over C-H activation and directed lithiations. We specialize in the custom synthesis of regiochemically pure thiophene derivatives. Our analytical team verifies chemical specifications using high-resolution GC or HPLC and NMR spectroscopy to guarantee absolute structural and isomeric purity.
Frequently Asked Questions
A: Thiophene is a classic bioisostere of the benzene ring, possessing similar aromaticity and steric dimensions. It is highly valued in drug design to modulate a molecule's lipophilicity and metabolic stability, often preventing unwanted cytochrome P450-mediated oxidation.
A: Substitutional isomers of thiophene can have nearly identical boiling and melting points. We verify precise substitution positions using high-resolution capillary GC or HPLC and confirm the exact regiochemistry via detailed 1H-NMR, 13C-NMR, and MS spectra.
A: Yes. While we stock standard analytical milligram scales, we can scale the production of specific halothiophenes and thiopheneboronic acids up to multi-kilogram or pilot-scale batches, supplying complete GHS MSDS and COA.