JPS5547639A - Preparation of alkylanthraquinone - Google Patents
Preparation of alkylanthraquinoneInfo
- Publication number
- JPS5547639A JPS5547639A JP12011678A JP12011678A JPS5547639A JP S5547639 A JPS5547639 A JP S5547639A JP 12011678 A JP12011678 A JP 12011678A JP 12011678 A JP12011678 A JP 12011678A JP S5547639 A JPS5547639 A JP S5547639A
- Authority
- JP
- Japan
- Prior art keywords
- oleum
- boric acid
- reaction
- concentration
- amount
- 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
PURPOSE: To suppress the side reactions in the ring-closing reaction of an alkylbenzoyl benzoic acid in the presence of oleum, and to prepare the title compound useful as an additive for the preparation of H2O2, in high yield, by adding boric acid to the reaction system.
CONSTITUTION: The tittle compound is prepared by the ring-closing reaction of a compound of formula I (R is 2W8C alkyl) in the presence of oleum and boric acid, at 100W180°C for ≤60 minutes. The amount of the boric acid depends upon the concentration and the amount of oleum, and is determined by the formula II [B is (weight of boric acid)/(weight of oleum)×100; A is concentration of SO3 in oleum (%), C is -2W+2]. The SO3 concentration of oleum is 5W65wt%.
EFFECT: Since the reaction is carried out at high temperature, the amount of oleum can be reduced, and the reaction time is shortened.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12011678A JPS5547639A (en) | 1978-09-29 | 1978-09-29 | Preparation of alkylanthraquinone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12011678A JPS5547639A (en) | 1978-09-29 | 1978-09-29 | Preparation of alkylanthraquinone |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5547639A true JPS5547639A (en) | 1980-04-04 |
JPS6136500B2 JPS6136500B2 (en) | 1986-08-19 |
Family
ID=14778338
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12011678A Granted JPS5547639A (en) | 1978-09-29 | 1978-09-29 | Preparation of alkylanthraquinone |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5547639A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5951235A (en) * | 1982-09-17 | 1984-03-24 | Kawasaki Kasei Chem Ltd | 2-(4-methyl-pentyl)-anthraquinone and its preparation |
FR2543544A1 (en) * | 1983-03-30 | 1984-10-05 | Ugine Kuhlmann | PROCESS FOR DECOMPOSING AN ORTHOBENZOYL-BENZOIC ACID COMPLEX, HYDROGEN FLUORIDE AND BORON TRIFLUORIDE |
-
1978
- 1978-09-29 JP JP12011678A patent/JPS5547639A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5951235A (en) * | 1982-09-17 | 1984-03-24 | Kawasaki Kasei Chem Ltd | 2-(4-methyl-pentyl)-anthraquinone and its preparation |
JPH0319215B2 (en) * | 1982-09-17 | 1991-03-14 | Kawasaki Kasei Chemicals | |
FR2543544A1 (en) * | 1983-03-30 | 1984-10-05 | Ugine Kuhlmann | PROCESS FOR DECOMPOSING AN ORTHOBENZOYL-BENZOIC ACID COMPLEX, HYDROGEN FLUORIDE AND BORON TRIFLUORIDE |
Also Published As
Publication number | Publication date |
---|---|
JPS6136500B2 (en) | 1986-08-19 |
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