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HomeProduct name listP-Toluenesulfonic anhydride

P-Toluenesulfonic anhydride

  • CAS NO.:4124-41-8
  • Empirical Formula: C14H14O5S2
  • Molecular Weight: 326.38
  • MDL number: MFCD00008548
  • EINECS: 223-926-9
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-05-18 08:51:57
P-Toluenesulfonic anhydride Structural

What is P-Toluenesulfonic anhydride?

Chemical properties

Off-white to cream powder

The Uses of P-Toluenesulfonic anhydride

p-Toluenesulfonic anhydride has been employed as reagent in palladium-catalyzed allylic alkenylation of allylic alcohols with n-butyl acrylate.

General Description

p-Toluenesulfonic anhydride acts as electrophilic species and activates 2-deoxy-sugar hemiacetals in situ, which reacts stereoselectively with nucleophilic acceptors to afford β-anomers.

Synthesis

Add p-toluenesulfonic acid and an m-phosphorous compound used as raw materials into a reaction kettle, dropwise adding thionyl chloride while stirring. Controlling the temperature in the reaction kettle at 68-76 ℃ and heating to perform condensation after dropwise addition; inputting water and hydrochloric acid into the reaction kettle, cooling to 0 ℃. The reaction solution generated in the previous step was drawn into the water, vacuum filtration was performed, and centrifuging was used to obtain a crude product, p-toluenesulfonic anhydride. Furthermore, it was inputting ethyl acetate, performing heating reflux, and freezing to perform crystallization, thus obtaining the qualified finished product.

Properties of P-Toluenesulfonic anhydride

Melting point: 121-127 °C(lit.)
Boiling point: 478.0±48.0 °C(Predicted)
Density  1.361±0.06 g/cm3(Predicted)
storage temp.  Inert atmosphere,2-8°C
form  Powder, Crystals and/or Chunks
color  Off-white to gray
Sensitive  Moisture Sensitive
BRN  2223702
CAS DataBase Reference 4124-41-8(CAS DataBase Reference)

Safety information for P-Toluenesulfonic anhydride

Signal word Danger
Pictogram(s)
ghs
Corrosion
Corrosives
GHS05
GHS Hazard Statements H314:Skin corrosion/irritation
Precautionary Statement Codes P260:Do not breathe dust/fume/gas/mist/vapours/spray.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P363:Wash contaminated clothing before reuse.
P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Computed Descriptors for P-Toluenesulfonic anhydride

InChIKey PDVFSPNIEOYOQL-UHFFFAOYSA-N

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