1-Ethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole

Name: 1-Ethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole
Brand: ChemScene
Availability: InStock
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CAS No. 1007110-53-3
Cat. No. CS-W001067
Purity≥97%
MDL No.MFCD16659009

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FedEx Limited Quantities Ground	$0.00
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1-Ethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole|CS-W001067

Structure of 1007110-53-3

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General Information

CAS No. 1007110-53-3
Cat. No. CS-W001067
Purity ≥97%
MDL No. MFCD16659009
Storage -20°C, sealed storage, away from moisture
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₁₁H₁₉BN₂O₂
Molecular Weight 222.09
Synonym(s) N-ethylpyrazole-5- boronic ester
SMILES CC1(C)C(C)(C)OB(C2=CC=NN2CC)O1

Description

1-Ethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole delivers a stable, moisture-tolerant boronate handle for efficient Suzuki-Miyaura coupling. This bench-stable reagent integrates readily into complex molecular architectures, enabling rapid access to functionalized pyrazole scaffolds under standard conditions.

Application

1-Ethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole serves as a versatile boronate building block for Suzuki-Miyaura cross-coupling reactions. The pyrazole core provides metabolic stability and tunable polarity, while the pinacol boronate group offers excellent bench stability, mild reaction conditions, and broad functional group tolerance. This reagent facilitates efficient C–C bond formation in the synthesis of biaryl and heteroaryl scaffolds relevant to medicinal chemistry and materials science.

Synthesis

Route1
- 930-36-9
- 61676-62-8
- ~%
- In-stock
  
  1007110-53-3
References
- WO2008/98104 A1, ; Page/Page column 168-169 ; WO 2008/098104 A1

Safety Information

Download SDS

GHS Pictogram :	GHS No : GHS07
Signal Word : Warning	UN#: N/A
Class : N/A	Packing Group : N/A
Hazard Statements : H302-H315-H319-H335
Precautionary Statements : P261-P264-P270-P271-P280-P302+P352-P304+P340-P305+P351+P338-P330-P362+P364-P403+P233-P405-P501

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Computational Chemistry Data

TPSA 36.28
LogP 1.2022
H_Acceptors 4
H_Donors 0
Rotatable_Bonds 2

Other Classifications

Building Blocks Skeleton Aromatic heterocycle compounds Pyrazole compounds

Key Words

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1-Ethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole

CAS No. 1007110-53-3

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