JPS57177058A - Novel fluoran compound - Google Patents
Novel fluoran compoundInfo
- Publication number
- JPS57177058A JPS57177058A JP56061259A JP6125981A JPS57177058A JP S57177058 A JPS57177058 A JP S57177058A JP 56061259 A JP56061259 A JP 56061259A JP 6125981 A JP6125981 A JP 6125981A JP S57177058 A JPS57177058 A JP S57177058A
- Authority
- JP
- Japan
- Prior art keywords
- compound
- lower alkyl
- coloring
- diphenylamine
- added
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
NEW MATERIAL:A compound of formulaI(R1 and R2 are lower alkyl or cyclic alkyl; X is H, lower alkyl or halogen).
EXAMPLE: 2-(4-Benzoylphenyl)amino-6-diethylaminofluoran.
USE: A precursor used for dyes in recording materials, e.g. (electro)thermorecording paper, having a high coloring developing concentration and a low coloring starting temperature and improved rise of color development with almost no ground coloring.
PROCESS: A diphenylamine compound of formula II (R is H or lower alkyl), e.g. 4-methoxy-4'-benzoyl-diphenylamine, is reacted with a benzophenone compound of formula III, e.g. 2-(2-hydroxy-4-dimethylaminobenzoyl)benzoic acid, in the presence of a condensing agent, e.g. concentrated sulfuric acid, at 0W80°C. The resultant reaction mixture is then added to water, and toluene and an aqueous solution of NaOH are added to a cake collected at a pH or 8W10. The resultant mixture is refluxed. The aimed compound is then obtained from the toluene layer.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56061259A JPS57177058A (en) | 1981-04-24 | 1981-04-24 | Novel fluoran compound |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56061259A JPS57177058A (en) | 1981-04-24 | 1981-04-24 | Novel fluoran compound |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57177058A true JPS57177058A (en) | 1982-10-30 |
| JPH0153279B2 JPH0153279B2 (en) | 1989-11-13 |
Family
ID=13166051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56061259A Granted JPS57177058A (en) | 1981-04-24 | 1981-04-24 | Novel fluoran compound |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57177058A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59120655A (en) * | 1982-12-27 | 1984-07-12 | Kanzaki Paper Mfg Co Ltd | Fluoran derivative, production thereof and recording medium using said derivative |
| US6432962B2 (en) | 2000-05-22 | 2002-08-13 | Leo Pharmaceutical Products Ltd. A/S | Benzophenones as inhibitors of IL-1β and TNF-α |
| US6541670B2 (en) | 1999-12-06 | 2003-04-01 | Leo Pharmaceutical Products Ltd. A/S | Aminobenzophenones as inhibitors of IL 1β and TNF-α |
| US7034015B2 (en) | 2001-08-28 | 2006-04-25 | Leo Pharma A/S | Aminobenzoephenones |
-
1981
- 1981-04-24 JP JP56061259A patent/JPS57177058A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59120655A (en) * | 1982-12-27 | 1984-07-12 | Kanzaki Paper Mfg Co Ltd | Fluoran derivative, production thereof and recording medium using said derivative |
| JPH0346473B2 (en) * | 1982-12-27 | 1991-07-16 | Kanzaki Paper Mfg Co Ltd | |
| US6541670B2 (en) | 1999-12-06 | 2003-04-01 | Leo Pharmaceutical Products Ltd. A/S | Aminobenzophenones as inhibitors of IL 1β and TNF-α |
| US6432962B2 (en) | 2000-05-22 | 2002-08-13 | Leo Pharmaceutical Products Ltd. A/S | Benzophenones as inhibitors of IL-1β and TNF-α |
| US7034015B2 (en) | 2001-08-28 | 2006-04-25 | Leo Pharma A/S | Aminobenzoephenones |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0153279B2 (en) | 1989-11-13 |
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