- Thiylation of polyelectrophiles with sulfur in hydrazine hydrate-amine systems
-
Thiylation of polyhaloalkanes and Paraform with elemental sulfur activated in hydrazine hydrate-organic amine systems is performed. Monoethanolamine, triethanolamine, and triethylamine were used as amines. The reactions gave thiocols of various structures. The products were characterized by elemental analysis and IR spectroscopy. Reductive cleavage of the synthesized thiocols was performed to obtain di- and polythiols. 2005 Pleiades Publishing, Inc.
- Deryagina,Levanova,Grabel'nykh,Sukhomazova,Russavskaya,Korchevin
-
-
Read Online
- A New Route to 1,2,3-Propanetrithiol
-
A new procedure was developed for preparing 1,2,3-propanetrithiol from available initial com-pounds. 1,2,3-Trichloroethane reacts with sodium disulfide prepared by dissolving sulfur in the system NaOH-N2H4 * H2O-H2O to give a disulfide dendrimeric polymer, thiokol, in almost quantitative yield. This polymer is subjected to reductive cleavage with an alkaline solution of hydrazine hydrate, which is followed by acidification with HCl. The yield of 1,2,3-propanetrithiol exceeds 60 percent. The synthesis can be performed as a one-pot procedure.
- Russavskaya, N. V.,Alekminskaya, O. V.,Deryagina, E. N.,Skotheim, and T. A.,Trofimov, B. A.
-
-
Read Online
- Preparation method 1, 2, 3-mercaptopropane (by machine translation)
-
The preparation method 1, 2, 3 - of,mercaptopropane takes trichloropropane and sodium hydrosulfide as the raw material, to obtain 1, 2, 3 -mercaptopropane. under the action of a catalyst, and the high-refractive-index high, can be used for preparing the high-refractive-index lens; and the preparation method is simple in process, and easy to obtain, product additional value. (by machine translation)
- -
-
Paragraph 0029-0082
(2020/05/14)
-
- Reduction of thiocols to alkanepolythiols with benzeneselenol
-
Heating of benzeneselenol with polymethylene disulfides to 40-120°C results in formation of the corresponding alkanedithiols or alkanetrithiols and diphenyl diselenide. Poly(tetramethylene disulfide) reacts with benzeneselenol to give 1,2-dithiane and diphenyl diselenide. A radical mechanism of this reaction is discussed.
- Shilkina,Papernaya,Deryagina
-
p. 263 - 265
(2007/10/03)
-