GB926245A - Process for the production of fluorubin - Google Patents
Process for the production of fluorubinInfo
- Publication number
- GB926245A GB926245A GB3133961A GB3133961A GB926245A GB 926245 A GB926245 A GB 926245A GB 3133961 A GB3133961 A GB 3133961A GB 3133961 A GB3133961 A GB 3133961A GB 926245 A GB926245 A GB 926245A
- Authority
- GB
- United Kingdom
- Prior art keywords
- amino
- dichloroquinoxaline
- chloroquinoxaline
- fluorubin
- diphenyl
- 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.)
- Expired
Links
Landscapes
- Inks, Pencil-Leads, Or Crayons (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
2-Amino-3-chloro-quinoxaline is made by passing dry ammonia gas through 2:3-dichloroquinoxaline in N-methylpyrrolidone at 140-143 DEG C. 2-Amino-3:6-dichloroquinoxaline is similarly prepared from 2:3:6-trichloroquinoxaline.ALSO:Fluorubin and its substitution products containing halogen atoms and/or alkyl radicals of 1 to 4 carbon atoms in the 1 to 4 and 8 to 11 positions are made by heating 2-amino-3-chloroquinoxaline or an appropriate substitution product thereof to a temperature from 140 DEG to 300 DEG C. An organic solvent such as dimethyl formamide, N-methyl- or N-ethyl-pyrrolidone-(2) or -piperidone-(2), di- or tri-chlorobenzene, nitrobenzene, methylnaphthalene, diphenyl or diphenyl oxide and an acid-binding agent such as sodium or potassium carbonate may be present. The 2-amino-3-chloroquinoxaline may be formed from 2:3-dichloroquinoxaline and heated in situ. Examples are given. The products are yellow pigments for varnishes and printing inks.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB59179A DE1142981B (en) | 1960-09-01 | 1960-09-01 | Process for the preparation of fluorubine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB926245A true GB926245A (en) | 1963-05-15 |
Family
ID=6972354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3133961A Expired GB926245A (en) | 1960-09-01 | 1961-08-31 | Process for the production of fluorubin |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE607568A (en) |
| CH (1) | CH419400A (en) |
| DE (1) | DE1142981B (en) |
| GB (1) | GB926245A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7338553B2 (en) | 2005-10-08 | 2008-03-04 | Fujifilm Imaging Colorants Limited | Process, compound, ink and use |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007050673A1 (en) * | 2007-10-19 | 2009-04-23 | Friedrich-Schiller-Universität Jena | New hexaaza-acene compounds comprising three pyrazine-annelated and additional benzo-annelated rings, useful as fluorescence dye in biochemical medical diagnostics, and as transistor in organic semiconductor technology |
-
1960
- 1960-09-01 DE DEB59179A patent/DE1142981B/en active Pending
-
1961
- 1961-07-21 CH CH862161A patent/CH419400A/en unknown
- 1961-08-25 BE BE607568A patent/BE607568A/en unknown
- 1961-08-31 GB GB3133961A patent/GB926245A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7338553B2 (en) | 2005-10-08 | 2008-03-04 | Fujifilm Imaging Colorants Limited | Process, compound, ink and use |
Also Published As
| Publication number | Publication date |
|---|---|
| CH419400A (en) | 1966-08-31 |
| BE607568A (en) | 1962-02-26 |
| DE1142981B (en) | 1963-01-31 |
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