Method for producing fluorinated hydrocarbons
US-2019389790-A1 · Dec 26, 2019 · US
Naphthalenedicarboxylic acid dichloride production method
US10730819B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10730819-B2 |
| Application number | US-201916575125-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 18, 2019 |
| Priority date | Oct 11, 2018 |
| Publication date | Aug 4, 2020 |
| Grant date | Aug 4, 2020 |
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Abstract
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A naphthalenedicarboxylic acid dichloride production method includes causing a reaction between naphthalenedicarboxylic acid and a chlorinating agent at a reaction temperature of 20° C. or higher and 75° C. or lower in presence of a solvent including tetrahydrofuran. The causing a reaction in the naphthalenedicarboxylic acid dichloride production method is preferably performed in presence of N,N-disubstituted formamide.
First claim
Opening claim text (preview).
What is claimed is: 1. A naphthalenedicarboxylic acid dichloride production method comprising causing a reaction between naphthalenedicarboxylic acid and a chlorinating agent at a reaction temperature of 20° C. or higher and 75° C. or lower in presence of a solvent including tetrahydrofuran. 2. The naphthalenedicarboxylic acid dichloride production method according to claim 1 , wherein the causing a reaction is performed in presence of N,N-disubstituted formamide. 3. The naphthalenedicarboxylic acid dichloride production method according to claim 2 , wherein the N,N-disubstituted formamide is dimethyl formamide or diethyl formamide. 4. The naphthalenedicarboxylic acid dichloride production method according to claim 1 , wherein the chlorinating agent is thionyl chloride or oxalyl chloride. 5. The naphthalenedicarboxylic acid dichloride production method according to claim 1 , wherein the naphthalenedicarboxylic acid is 2,6-naphthalene dicarboxylic acid and naphthalenedicarboxylic acid dichloride is 2,6-naphthalenedicarboxylic acid dichloride, or the naphthalenedicarboxylic acid is 1,4-naphthalenedicarboxylic acid and naphthalenedicarboxylic acid dichloride is 1,4-naphthalenedicarboxylic acid dichloride.
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Classifications
Substitution reactions at carbon centres, e.g. C-C or C-X, i.e. carbon-hetero atom, cross-coupling, C-H activation or ring-opening reactions · CPC title
Imides, amides or imidates (R-C=NR(OR)) · CPC title
- C07C51/60Primary
by conversion of carboxylic acids or their anhydrides {or esters, lactones, salts} into halides with the same carboxylic acid part · CPC title
Materials · CPC title
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- What does patent US10730819B2 cover?
- A naphthalenedicarboxylic acid dichloride production method includes causing a reaction between naphthalenedicarboxylic acid and a chlorinating agent at a reaction temperature of 20° C. or higher and 75° C. or lower in presence of a solvent including tetrahydrofuran. The causing a reaction in the naphthalenedicarboxylic acid dichloride production method is preferably performed in presence of N,…
- Who is the assignee on this patent?
- Kyocera Document Solutions Inc
- What technology area does this patent fall under?
- Primary CPC classification C07C51/60. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 04 2020 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).