2,5-Difluorobenzene-1-sulfonyl chloride

Name: 2,5-Difluorobenzene-1-sulfonyl chloride
Brand: ChemScene
Availability: InStock
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CAS No. 26120-86-5
Cat. No. CS-W010484
Purity≥97%
MDL No.MFCD00060682

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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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2,5-Difluorobenzene-1-sulfonyl chloride|CS-W010484

Structure of 26120-86-5

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General Information

CAS No. 26120-86-5
Cat. No. CS-W010484
Purity ≥97%
MDL No. MFCD00060682
Storage 4°C
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₆H₃ClF₂O₂S
Molecular Weight 212.60
Synonym(s) 2,5-Difluorobenzenesulfonyl chloride
SMILES O=S(C1=CC(F)=CC=C1F)(Cl)=O

Description

2,5-Difluorobenzene-1-sulfonyl chloride features a fluorinated aromatic ring with strategically positioned sulfonyl chloride functionality. This electrophilic reagent enables direct sulfonation of nucleophiles under mild conditions, offering high chemoselectivity in complex reaction environments. The electron-withdrawing fluorine substituents enhance reactivity while maintaining stability during storage and handling.

Application

2,5-Difluorobenzene-1-sulfonyl chloride serves as a versatile sulfonylating agent for the introduction of a difluorinated benzenesulfonyl group into target molecules. Its reactivity enables efficient formation of sulfonamide and sulfonate derivatives under mild conditions, with good bench stability and ease of purification. The ortho-fluorine substituents enhance electrophilicity and provide useful handles for downstream functionalization, making it valuable in medicinal chemistry and API scaffold construction.

Synthesis

Route1
- In-stock
  
  367-30-6
- ~89%
- In-stock
  
  26120-86-5
References
- Merck PatentGesellschaft mit Patent: US6509499 B1, 2003 ;
Route2
- 540-36-3
- ~%
- In-stock
  
  26120-86-5
References
- Tellers, David M.; Humphrey, Guy R. Patent: US2005/222428 A1, 2005 ; Location in patent: Page/Page column 5-6 ;

Safety Information

Download SDS

GHS Pictogram :	GHS No : GHS05
Signal Word : Danger	UN#: 3265
Class : 8	Packing Group : Ⅱ
Hazard Statements : H314
Precautionary Statements : P260-P264-P280-P301+P330+P331-P304+P340-P363-P405-P501

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Computational Chemistry Data

TPSA 34.14
LogP 1.8923
H_Acceptors 2
H_Donors 0
Rotatable_Bonds 1

Other Classifications

Building Blocks Functional Group Sulfonyl Chloride

Building Blocks Skeleton Aromatic ring compounds Benzene compounds

Key Words

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2,5-Difluorobenzene-1-sulfonyl chloride

CAS No. 26120-86-5

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