JPS5564542A - Preparation of 2-alkylanthraquinone - Google Patents
Preparation of 2-alkylanthraquinoneInfo
- Publication number
- JPS5564542A JPS5564542A JP13709978A JP13709978A JPS5564542A JP S5564542 A JPS5564542 A JP S5564542A JP 13709978 A JP13709978 A JP 13709978A JP 13709978 A JP13709978 A JP 13709978A JP S5564542 A JPS5564542 A JP S5564542A
- Authority
- JP
- Japan
- Prior art keywords
- reaction mixture
- alkyl
- alcohol
- compound
- separability
- 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
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To facilitate the extraction of the title compound useful as an assistant for the production of hydrofen peroxide, and to prepare the title compound economically, by adding a specific monohydric alcohol to a reaction mixture, thereby by improving the separability of an oil phase and a water phase of the reaction mixture.
CONSTITUTION: A 2-alkylanthraquinone is prepared by (1) cyclizing a compound I (R1 is 2W8C alkyl) in sulfuric acid or in oleum, (2) diluting the reaction mixture with water, and (3) extracting the objective compound with a hydrocarbon or a halogenated hydrocarbon in the presence of a monohydric alcohol of formula II (R2W4 are H, 1W16C alkyl, cycloalkyl, etc.; at least one of R2W4 is ≥3C alkyl, etc., or at least two of them are ethyl), e.g. butanol. The amount of the alcohol is 0.1W25wt%, pref. 0.3W10wt%, based on the sulfuric acid in the reaction mixture. The addition of the alcohol improves the separability of the oil phase and the water phase, and facilitates the extraction of the objective compound.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13709978A JPS5564542A (en) | 1978-11-07 | 1978-11-07 | Preparation of 2-alkylanthraquinone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13709978A JPS5564542A (en) | 1978-11-07 | 1978-11-07 | Preparation of 2-alkylanthraquinone |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5564542A true JPS5564542A (en) | 1980-05-15 |
JPS6136735B2 JPS6136735B2 (en) | 1986-08-20 |
Family
ID=15190830
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13709978A Granted JPS5564542A (en) | 1978-11-07 | 1978-11-07 | Preparation of 2-alkylanthraquinone |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5564542A (en) |
-
1978
- 1978-11-07 JP JP13709978A patent/JPS5564542A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6136735B2 (en) | 1986-08-20 |
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