JPS5535051A - Preparation of naphthostyril - Google Patents
Preparation of naphthostyrilInfo
- Publication number
- JPS5535051A JPS5535051A JP10881878A JP10881878A JPS5535051A JP S5535051 A JPS5535051 A JP S5535051A JP 10881878 A JP10881878 A JP 10881878A JP 10881878 A JP10881878 A JP 10881878A JP S5535051 A JPS5535051 A JP S5535051A
- Authority
- JP
- Japan
- Prior art keywords
- pref
- naphthalimide
- hypochlorite
- koh
- naoh
- 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
- Indole Compounds (AREA)
Abstract
PURPOSE: To prepare the title compound useful as an intermediate of a cationic dye, in high yield, using a small amount of water, by reacting a naphthalimide derivative purified by the alkali dissolution and cooling crystallization, with a hypochlorite.
CONSTITUTION: Naphthalimide or its derivative is dissolved in an caustic alkali solution at ≥40°C, pref. at 50W90°C, and cooled to crystallize. The purified naphthalimide is reacted with a hypochlorite at 10W30°C, pref. 15W25°C, in the presence of NaOH and KOH, to afford the objective compound. The molar ratio of NaOH to KOH is 9:1W2:8, pref. 8:2W5:5.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10881878A JPS5845425B2 (en) | 1978-09-05 | 1978-09-05 | Method for producing naphthostyrills |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10881878A JPS5845425B2 (en) | 1978-09-05 | 1978-09-05 | Method for producing naphthostyrills |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5535051A true JPS5535051A (en) | 1980-03-11 |
JPS5845425B2 JPS5845425B2 (en) | 1983-10-08 |
Family
ID=14494284
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10881878A Expired JPS5845425B2 (en) | 1978-09-05 | 1978-09-05 | Method for producing naphthostyrills |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5845425B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS591536A (en) * | 1982-06-04 | 1984-01-06 | フイリツプス・ペトロリユ−ム・コンパニ− | Recovery of granular poly(arylene sulfide) |
US4824962A (en) * | 1985-10-04 | 1989-04-25 | Hoechst Aktiengesellschaft | Process for the preparation of naphthostyril |
-
1978
- 1978-09-05 JP JP10881878A patent/JPS5845425B2/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS591536A (en) * | 1982-06-04 | 1984-01-06 | フイリツプス・ペトロリユ−ム・コンパニ− | Recovery of granular poly(arylene sulfide) |
JPH0125493B2 (en) * | 1982-06-04 | 1989-05-18 | Phillips Petroleum Co | |
US4824962A (en) * | 1985-10-04 | 1989-04-25 | Hoechst Aktiengesellschaft | Process for the preparation of naphthostyril |
Also Published As
Publication number | Publication date |
---|---|
JPS5845425B2 (en) | 1983-10-08 |
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