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CAS RN: 24057-28-1 | Product Number: P0942

Pyridinium p-Toluenesulfonate


Purity: >98.0%(T)
Synonyms:
  • PPTS
Documents:
25G
$17.00
4   3   ≥100 
100G
$50.00
2   1   ≥40 
500G
$171.00
Contact Us Contact Us ≥100 

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Product Number P0942
Purity / Analysis Method >98.0%(T)
Molecular Formula / Molecular Weight C__5H__5N·C__7H__8O__3S = 251.30 
Physical State (20 deg.C) Solid
Store Under Inert Gas Store under inert gas
Condition to Avoid Air Sensitive,Hygroscopic
CAS RN 24057-28-1
Reaxys Registry Number 3764305
PubChem Substance ID 87575059
MDL Number

MFCD00013108

Specifications
Appearance White to Almost white powder to crystal
Purity(Neutralization titration) min. 98.0 %
Melting point 118.0 to 122.0 °C
Solubility in Water almost transparency
Properties (reference)
Melting Point 120 °C
Solubility in water Soluble
Solubility (soluble in) Ethanol, Chloroform, dichloromethane, Acetone
GHS
Signal Word Warning
Hazard Statements H320 : Causes eye irritation.
Precautionary Statements P264 : Wash skin thoroughly after handling.
P337 + P313 : If eye irritation persists: Get medical advice/ attention.
P305 + P351 + P338 : IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Related Laws:
Transport Information:
HS Number 2933.39.9200
Application
Application for Introduction of Protecting Groups Using PPTS as an Acid Catalyst

P0942

Typical procedure :PPTS catalyzed THP protection of (R)-(+)-glycidol
Pyridinium p-toluenesulfonate (PPTS) (1.00 g, 4.05 mmol) and 3,4-dihydro-2H-pyran (11.3 mL, 121.5 mmol) are added to a stirred solution of (R)-(+)-glycidol (6.00 g, 80.99 mmol) in dichloromethane (80 mL) at 0 °C under argon atmosphere. After 6 h, aqueous NaHCO3 solution (60 mL) is added and the layers are separated. The aqueous layer is extracted with dichloromethane (3x50 mL). Combined organic layer is dried over MgSO4, filtered, and concentrated in vacuo. The crude mixture is purified by column chromatography (EtOAc:hexane = 1:5) to give the desired product (9.22 g, 72%).

References


Application
PPTS Catalyzed Hydrolysis of Dioxolane-type Acetals

Reference


PubMed Literature


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