599-94-0Relevant articles and documents
Cycloaddition Reactions of Azides and Electron-Deficient Alkenes in Deep Eutectic Solvents: Pyrazolines, Aziridines and Other Surprises
Casarrubios, Luis,Díez-González, Silvia,Lachhani, Kushal,Pimpasri, Chaleena,Rzepa, Henry S.,Sebest, Filip,White, Andrew J. P.
, (2020/05/19)
The reaction of organic azides and electron-deficient alkenes was investigated in a deep eutectic solvents. A series of highly substituted 2-pyrazolines was successfully isolated and their formation rationalised by DFT calculations. The critical effect of substitution was also explored; even relatively small changes in the cycloaddition partners led to completely different reaction outcomes and triazolines, triazoles or enaminones can be formed as major products depending on the alkene employed. (Figure presented.).
Method for preparing substituted ethyl aryl sulfone
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Paragraph 0085-0086, (2017/03/23)
The invention discloses a method for preparing substituted ethyl aryl sulfone. The method comprises the following steps: a compound shown in a formula II, a compound shown in a formula III and alkali are uniformly mixed in a solvent and are subjected to a coupling reaction, a compound shown in a formula I containing R2' as -CH2CH2R is obtained after the reaction is complete; or the method comprises the following steps: the compound shown in the formula II, ethyl propiolate and alkali are uniformly mixed in the solvent and then are subjected to the coupling reaction, and the compound shown in a formula I containing R2' as -CH=CH2=OOCH2CH3 is obtained after the reaction is complete. The method has the advantages of universality, convenience, simple reaction system, and mild reaction condition; the reaction can be amplified to a gram level, the reaction raw materials are simple and easily available, the used alkali and raw materials have the advantages of low cost and easy acquisition, the atom utilization rate is high, and solvent toxicity is low.
Binuclear manganese complexes as catalysts in the selective and efficient oxidation of sulfides to sulfones
Barton, Derek H. R.,Li, Wenge,Smith, Jason A.
, p. 7055 - 7058 (2007/10/03)
The binuclear Mn(IV)-Mn(IV) manganese complex 1 catalyzes the periodic acid oxidation of sulfides to sulfones under mild conditions. The reaction was found to be highly selective giving almost quantitative yields of the sulfones even in the presence other easily oxidized groups. Only amines were found to hinder the reaction.
