26978-64-3Relevant articles and documents
Design, synthesis, and evaluation of a highly effective and safe perfluoro-alternative with a "weak site": Potassium 1,1,2,2,3,3,4,4-octafluoro-4-(perfluorobutoxy)butane-1-sulfonate
Gao, Yangguang,Guo, Rui,Liu, Guoxing
supporting information, p. 1114 - 1119 (2022/02/17)
A novel, highly efficient, degradable alternative perfluorinated compound (APFC) with a "weak site"was synthesized using various methods via a common intermediate. The main reactions were oxidation by sulfonyl chloride, chlorination, and electrolytic fluorination. The synthetic strategies were efficient and suitable for industrial production of the APFC at the kilogram scale. The surface tension of the APFC and inhibition of chromium mist by the APFC were assessed. The APFC met the requirements for being produced industrially and also performed excellently, was resistant to degradation, and was shown to be more environmentally friendly than perfluorooctylsulfonic acid. This journal is
Preparation method of 1,4-butane sultone
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Paragraph 0020; 0021; 0022, (2018/10/19)
The invention relates to a preparation method of 1,4-butane sultone. The preparation method comprises the following steps: S1, putting 4-chlorobutanol and a sodium sulfite solution into a reaction vessel to be fully mixed, controlling the temperature to be 25-110 DEG C, performing reaction for 4-24h, and then, performing dehydration under reduced pressure for later use; S2, adding concentrated hydrochloric acid to the material subjected to dehydration under reduced pressure to perform acidification, controlling the temperature to be 25-100 DEG C and performing stirring for 1-12h, then performing cooling to room temperature, performing filtration, and concentrating the filtrate to obtain a concentrated solution containing 4-hydroxybutanesulfonate; S3, putting the concentrated solution in the vacuum environment to enable 4-hydroxybutanesulfonate to be subjected to dehydrated closed loop to obtain a crude product containing 1,4-butane sultone; and S4, performing rectifying treatment on the crude product obtained in the S3 to obtain 1,4-butane sultone. The preparation method provided by the invention has the beneficial effects that the process route is short, the dosages of acid and organic solvents are low, the post-treatment is simple, the total yield reaches 85% or above, and the purity of the product can reach 99.9% or above.
Oxidative Cleavage and Cyclization of Disulfide Carboxylic Acids and Alcohols by Aqueous Iodine: A Facile Route to Five-Membered Ring Sultines
Doi, Joyce Takahashi,Luehr, Gary W.,Musker, W. Kenneth
, p. 5716 - 5719 (2007/10/02)
The kinetics and mechanism of the oxidative cleavage by aqueous iodine of disulfide carboxylic acids and alcohols are presented.There is evidence for intramolecular interaction of the oxygen nucleophiles.The sole product of the iodine oxidation of 3,3'-dithiodipropanol is the sultine 1,2-oxathiolane 2-oxide, which is formed after the rate-determining step, apparently via rapid cyclization of the sulfenyl iodide.The anchimeric assistance provided by the neighboring carboxylate group in the reaction of 3,3'-dithiodipropanoic acid is responsible for the pH profile of the rate of oxidative cleavage.At a given pH, the rate law for the reaction is -d/dt = kI3->(0.0905->-1 + 0.0019->-2).The inverse second term in iodide ion not has been observed previously in kinetic studies of disulfide reactions and is interpreted as evidence for a disulfide-iodonium complex.
