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US 10,472,343 B2Granted
Method for producing 1,2,3,5,6-pentathiepane
AssigneeMitsubishi Gas Chemical Company, Inc.
InventorsHiroyuki Tanagi, Yoshiaki Yamamoto, Hiroshi Horikoshi
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Abstract
The present invention can provide a method for producing 1,2,3,5,6-pentathiepane, comprising Steps A and B: Step A: a step of synthesizing a tetrathiocarbonate in a protic solvent; and Step B: a step of carrying out reaction between the tetrathiocarbonate and a dihalogenated methane in a mixed solvent (where the mass ratio of a protic solvent and an aprotic solvent is 13:87-38:62).
Claims2
A method for producing 1,2,3,5,6-pentathiepane, comprising:
- synthesizing a tetrathiocarbonate in a protic solvent;
- and
- carrying out reaction between the tetrathiocarbonate and a dihalogenated methane in a mixture of the protic solvent and an aprotic solvent in which the mass ratio of the protic solvent to the aprotic solvent is 13:87-38:62,
- wherein the tetrathiocarbonate is selected from the group consisting of sodium tetrathiocarbonate, potassium tetrathiocarbonate, and lithium tetrathiocarbonate;
- wherein the dihalogenated methane comprises dibromomethane or diiodomethane;
- and
- wherein the protic solvent comprises ethanol, methanol, or combinations thereof, and the aprotic solvent is toluene.
4 more elements
Dependencies are inferred from the claim text.