Description

1-(Tetrahydro-2H-pyran-4-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (CAS: 1040377-03-4) is a high-purity boronic ester derivative designed for advanced organic synthesis and pharmaceutical research. With the molecular formula C₁₄H₂₃BN₂O₃, this compound features a tetrahydro-2H-pyran-4-yl group linked to a pyrazole ring bearing a pinacol boronate ester moiety, making it an excellent building block for Suzuki-Miyaura cross-coupling reactions. The product is supplied as a white to off-white crystalline powder with ≥95% purity (HPLC), ensuring consistent performance in sensitive applications. It is packaged under inert conditions to maintain stability and is ideal for medicinal chemistry, ligand synthesis, and material science research. Store in a cool, dry place away from moisture and light to preserve its reactivity.

Properties

• CAS Number: 1040377-03-4
• Complexity: 342
• IUPAC Name: 1-tetrahydropyran-4-yl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazole
• InChI: InChI=1S/C14H23BN2O3/c1-13(2)14(3,4)20-15(19-13)11-9-16-17(10-11)12-5-7-18-8-6-12/h9-10,12H,5-8H2,1-4H3
• InChI Key: BOOVIFJKQGYEON-UHFFFAOYSA-N
• Exact Mass: 278.1801728
• Molecular Formula: C14H23BN2O3
• Molecular Weight: 278.16
• SMILES: B1(OC(C(O1)(C)C)(C)C)C2=CN(N=C2)C3CCOCC3
• Topological: 45.5
• Monoisotopic Mass: 278.1801728
• Synonyms: 1040377-03-4, 1-(Tetrahydro-2H-pyran-4-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole, 811-775-7, 1-(oxan-4-yl)-4-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole, MFCD12033229, 1-(oxan-4-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazole, 1-(Tetrahydro-pyran-4-yl)-1H-pyrazole-4-boronic acid pinacol ester, 1-(Oxan-4-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole, 1-(TETRAHYDROPYRAN-4-YL)-1H-PYRAZOLE-4-BORONIC ACID PINACOL ESTER, 1-(Tetrahydro-2H-pyran-4-yl)-1H-pyrazole-4-boronic acid pinacol ester, SCHEMBL2358864, DTXSID10671760, BOOVIFJKQGYEON-UHFFFAOYSA-N, BCP12533, 1-(4-TETRAHYDROPYRANYL)-1H-PYRAZOLE-4-BORONIC ACID PINACOL ESTER, AKOS015920210, CS-W000813, GS-5575, PB29941, 1H-PYRAZOLE, 1-(TETRAHYDRO-2H-PYRAN-4-YL)-4-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-, SY067424, DB-345432, T3668, F2147-7341, 1-(Tetrahydropyran-4-yl)-1Hpyrazole-4-boronic acid pinacol ester, (1-(TETRAHYDRO-2H-PYRAN-4-YL)-1H-PYRAZOL-4-YL)BORONIC ACID PINACOL ESTER, 1-(tetrahydro-pyran-4-yl)-4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-1H-pyrazole, 1-(tetrahydropyran-4-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1h-pyrazole, 1-TETRAHYDROPYRAN-4-YL-4-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)PYRAZOLE

This boronic ester is widely used in pharmaceutical research as a key intermediate for the synthesis of bioactive molecules via cross-coupling reactions. It is particularly valuable in constructing heterocyclic scaffolds for drug discovery and agrochemical development. Researchers also utilize it in materials science for designing boron-containing polymers and advanced functional materials.

Safety and Hazards

GHS Hazard Statements

• H302 (33.3%): Harmful if swallowed [Warning Acute toxicity, oral]
• H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
• H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
• H335 (33.3%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

Precautionary Statements

• P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P319, P321, P330, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501

Hazard Classes and Categories

• Acute Tox. 4 (33.3%)
• Skin Irrit. 2 (100%)
• Eye Irrit. 2 (100%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.