Non-aqueous electrolyte solution additive, and non-aqueous electrolyte solution for lithium secondary battery and lithium secondary battery which include the same
US-11081728-B2 · Aug 3, 2021 · US
Method for producing 1,2,3,5,6-pentathiepane
US10472343B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10472343-B2 |
| Application number | US-201816073609-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 15, 2018 |
| Priority date | Jan 23, 2017 |
| Publication date | Nov 12, 2019 |
| Grant date | Nov 12, 2019 |
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Abstract
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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).
First claim
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The invention claimed is: 1. 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. 2. The method for producing 1,2,3,5,6-pentathiepane according to claim 1 , wherein the synthesizing and carrying out reaction are carried out sequentially.
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- C07D341/00Primary
Heterocyclic compounds containing rings having three or more sulfur atoms as the only ring hetero atoms · CPC title
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- What does patent US10472343B2 cover?
- 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).
- Who is the assignee on this patent?
- Mitsubishi Gas Chemical Co
- What technology area does this patent fall under?
- Primary CPC classification C07D341/00. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 12 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).