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CAS RN: 2232-08-8 | Product Number: T1985

1-(p-Toluenesulfonyl)imidazole


Purity: >98.0%(HPLC)(N)
Synonyms:
  • 1-Tosylimidazole
Documents:
5G
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25G
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Product Number T1985
Purity / Analysis Method >98.0%(HPLC)(N)
Molecular Formula / Molecular Weight C__1__0H__1__0N__2O__2S = 222.26  
Physical State (20 deg.C) Solid
Store Under Inert Gas Store under inert gas
Condition to Avoid Moisture Sensitive
CAS RN 2232-08-8
Reaxys Registry Number 612451
PubChem Substance ID 87577678
MDL Number

MFCD00005285

Specifications
Appearance White to Almost white powder to crystal
Purity(HPLC) min. 98.0 area%
Purity(with Total Nitrogen) min. 98.0 %
Melting point 75.0 to 79.0 °C
Solubility in Methanol almost transparency
Properties (reference)
Melting Point 77 °C
Solubility (soluble in) Methanol
GHS
Pictogram Pictogram
Signal Word Warning
Hazard Statements H315 : Causes skin irritation.
H319 : Causes serious eye irritation.
Precautionary Statements P264 : Wash skin thoroughly after handling.
P280 : Wear protective gloves/ eye protection/ face protection.
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.
P302 + P352 : IF ON SKIN: Wash with plenty of soap and water.
P332 + P313 : If skin irritation occurs: Get medical advice/ attention.
P362 : Take off contaminated clothing and wash before reuse.
Related Laws:
Transport Information:
HS Number 2933.29.4300
Application
Esterification of Alcohols with Sodium Carboxylates

Experimental procedure: To a double-necked round bottom flask equipped with a condenser is added a mixture of alcohol (0.01 mol), TsIm (0.012 mol), TEA (0.015 mol), RCO2Na (0.02 mol) and a catalytic amount of TBAI (0.1 g) in DMF (30 mL). The mixture is refluxed until TLC monitoring indicates no further improvement in the conversion. The solvent is evaporated under vacuum and the remaining foam is dissolved in CHCl3 (100 mL) and subsequently washed with water (2 x 100 mL). The organic layer is dried (Na2SO4) and evaporated. The crude product is purified by column chromatography on silica gel eluting with a mixture of n-hexane/EtOAc to afford the desired ester.

References


PubMed Literature


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