JPS552638A - Cyanopyrazinecarboxylic ester and its preparation - Google Patents
Cyanopyrazinecarboxylic ester and its preparationInfo
- Publication number
- JPS552638A JPS552638A JP7489078A JP7489078A JPS552638A JP S552638 A JPS552638 A JP S552638A JP 7489078 A JP7489078 A JP 7489078A JP 7489078 A JP7489078 A JP 7489078A JP S552638 A JPS552638 A JP S552638A
- Authority
- JP
- Japan
- Prior art keywords
- formula
- compound
- cyanopyrazinecarboxylic
- ester
- preparation
- 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
Landscapes
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Plural Heterocyclic Compounds (AREA)
Abstract
NEW MATERIAL:A compound of formula I: (R is H1 is H, alkyl, phenyl, or furyl group; R' is alkyl groups).
USE: A raw material for preparing bispyrrolopyrazine pigments of formula II: (X is carbocyclic aromiatic diamine residue).
PROCESS: A dicyanopyrazine compound of formula III is dissolved in an alcohol and reacted with an alkali at -5 to 30°C to form a cyanopyrazine imidate solution. The pH of the reaction mixture is adjusted to 1W5 by adding a 1W30 wt.% aqueous mineral acid to give the objective compound of formula I.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7489078A JPS552638A (en) | 1978-06-22 | 1978-06-22 | Cyanopyrazinecarboxylic ester and its preparation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7489078A JPS552638A (en) | 1978-06-22 | 1978-06-22 | Cyanopyrazinecarboxylic ester and its preparation |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS552638A true JPS552638A (en) | 1980-01-10 |
JPS6218553B2 JPS6218553B2 (en) | 1987-04-23 |
Family
ID=13560409
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7489078A Granted JPS552638A (en) | 1978-06-22 | 1978-06-22 | Cyanopyrazinecarboxylic ester and its preparation |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS552638A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH045877Y2 (en) * | 1987-02-13 | 1992-02-19 | ||
JPH0396556U (en) * | 1989-12-27 | 1991-10-02 |
-
1978
- 1978-06-22 JP JP7489078A patent/JPS552638A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6218553B2 (en) | 1987-04-23 |
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