ChemicalBook CAS DataBase List P-Toluenesulfonic anhydride

P-Toluenesulfonic anhydride synthesis

12synthesis methods

Product Name:P-Toluenesulfonic anhydride
CAS Number:4124-41-8
Molecular formula:C14H14O5S2
Molecular Weight:326.38

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.

Phosphinous amide, N,N-diethyl-P,P-bis(trifluoromethyl)-

55865-38-8
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104-15-4
737 suppliers
$133.00/500g

359-65-9
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4124-41-8
290 suppliers
$10.00/5g

Ethanamine, N-ethyl-, 4-methylbenzenesulfonate (1:1)

52723-97-4
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Yield:359-65-9 90%

Reaction Conditions:

in various solvent(s);

References:

Hoge, Berthold;Neufeind, Stefan;Hettel, Sonja;Wiebe, Waldemar;Th?sen, Christoph [Journal of Organometallic Chemistry,2005,vol. 690,# 10,p. 2382 - 2387]

104-15-4
737 suppliers
$133.00/500g

4124-41-8
290 suppliers
$10.00/5g

References