3,5-Di-tert-butyl-1h-pyrazole

Name: 3,5-Di-tert-butyl-1h-pyrazole
Brand: ChemScene
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CAS No. 1132-14-5
Cat. No. CS-0242281
Purity≥97%
MDL No.MFCD00040249

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Type	HazMat Fee
Excepted Quantity	$0.00
FedEx Limited Quantities Ground	$0.00
Hazmat Ground shipping	$50.00+
Inaccessible (Haz class 6.1 or 9), Domestic	$68.00+
Accessible (Haz class 3, 4, 5 or 8), Domestic	$158.00+
Inaccessible (Haz class 6.1 or 9), International	$108.00+
Accessible (Haz class 3, 4, 5 or 8), International	$238.00+

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3,5-Di-tert-butyl-1h-pyrazole|CS-0242281

Structure of 1132-14-5

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Description

3,5-Di-tert-butyl-1H-pyrazole features a sterically shielded pyrazole core with two bulky tert-butyl groups at the 3 and 5 positions, enhancing stability and resistance to oxidation. This electron-rich heterocycle serves as a robust scaffold for ligand design and catalytic applications, particularly in transition metal coordination where steric protection prevents decomposition.

Application

3,5-Di-tert-butyl-1H-pyrazole serves as a sterically hindered pyrazole scaffold enabling selective functionalization at the 1-position. Its robust bench stability and tolerance to diverse reaction conditions make it a reliable building block for heterocyclic synthesis. The bulky tert-butyl groups confer enhanced solubility and facilitate purification, while maintaining reactivity in standard coupling and metal-catalyzed transformations.

General Information

CAS No. 1132-14-5
Cat. No. CS-0242281
Purity ≥97%
MDL No. MFCD00040249
Storage Store at room temperature
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₁₁H₂₀N₂
Molecular Weight 180.29
Synonym(s) 3,5-tBu2-pyrazole
SMILES CC(C1=CC(C(C)(C)C)=NN1)(C)C

Computational Chemistry Data

TPSA 28.68
LogP 3.0047
H_Acceptors 1
H_Donors 1
Rotatable_Bonds 0

Safety Information

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GHS Pictogram :	GHS No : GHS07
Signal Word : Warning	UN#: N/A
Class : N/A	Packing Group : N/A
Hazard Statements : H302-H315-H319-H335-H412
Precautionary Statements : P261-P264-P270-P271-P273-P280-P302+P352-P304+P340-P330-P362+P364-P405-P501

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3,5-Di-tert-butyl-1h-pyrazole

CAS No. 1132-14-5

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