51698-64-7Relevant articles and documents
Co-production method of thionocarbamate and benzyl thioether acetic acid and application of the method
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Paragraph 0073; 0074, (2019/12/02)
The invention discloses a co-production method of thionocarbamate and benzyl thioether acetic acid and application of the method. The method comprises the following steps: with xanthate and benzyl chloride as initial raw materials, and performing esterification reaction to obtain benzyl xanthate; carrying out ammonolysis on benzyl xanthate by using primary amine to obtain thionocarbamate and benzyl mercaptan; further adding sodium chloroacetate into the mixture for reaction, thus generating benzyl thioether sodium acetate; finally, performing liquid separation to obtain the thionocarbamate collecting agent and a water phase containing benzyl thioether sodium acetate. The benzyl thioether sodium acetate-containing water phase can further react with benzyl chloride to obtain benzyl thioetherbenzyl acetate or be acidified and esterified with fatty alcohol to generate benzyl thioether alkyl acetate, and the two ester compounds can be subjected to hydroximation to synthesize benzyl thioether ethyl hydroximic acid. The method solves the problems of difficult recovery, difficult utilization and unpleasant smell of the byproduct sulfhydryl compound in the traditional thionocarbamate process, realizes co-production of benzyl thioether acetic acid and derivatives thereof, and improves the reaction efficiency.
Method for preparing thionocarbamate and trithiocarbonate
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Paragraph 0059-0061, (2017/06/20)
The invention discloses a method for preparing thionocarbamate and trithiocarbonate. The method comprises the following steps: carrying out an esterification reaction on alkyl xanthate salt and a halogenation reagent to obtain alkyl xanthate ester; carrying out an aminolysis reaction on the alkyl xanthate ester and fatty amine to obtain a thionocarbamate and mercaptan compound mixture; and carrying out an addition reaction on the thionocarbamate and mercaptan compound mixture and carbon disulfide in the presence of caustic alkali, and carrying out solid-liquid separation to obtain a liquid phase which is the thionocarbamate product and a solid phase which is the trithiocarbonate product. The products prepared through the preparation method have high yield and high purity, and the method allows the two high-efficiency collectors comprising thionocarbamate and trithiocarbonate to be simultaneously produced, and has the advantages of easiness in separation of the products, high atom economy property, low production cost, and easiness in realization of industrial production.
Facile one pot synthesis of a range of reversible addition-fragmentation chain transfer (RAFT) agents
Skey, Jared,O'Reilly, Rachel K.
supporting information; experimental part, p. 4183 - 4185 (2009/03/11)
The application of a universal synthetic strategy for the high yielding and facile synthesis of a wide range of functional RAFT agents including trithiocarbonates, xanthates and dithiocarbamates is described. The Royal Society of Chemistry.
