JPH09268168A - Production of 1-amino-5-benzoylaminoanthraquinone - Google Patents

Production of 1-amino-5-benzoylaminoanthraquinone

Info

Publication number
JPH09268168A
JPH09268168A JP8248896A JP8248896A JPH09268168A JP H09268168 A JPH09268168 A JP H09268168A JP 8248896 A JP8248896 A JP 8248896A JP 8248896 A JP8248896 A JP 8248896A JP H09268168 A JPH09268168 A JP H09268168A
Authority
JP
Japan
Prior art keywords
sulfuric acid
present
component
benzoylaminoanthraquinone
dbaq
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.)
Pending
Application number
JP8248896A
Other languages
Japanese (ja)
Inventor
Tadashi Okuma
正 大熊
Masumi Nishihara
益實 西原
Naoto Ito
尚登 伊藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Priority to JP8248896A priority Critical patent/JPH09268168A/en
Publication of JPH09268168A publication Critical patent/JPH09268168A/en
Pending legal-status Critical Current

Links

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PROBLEM TO BE SOLVED: To industrially and efficiently obtain the subject compound important as an intermediate for dyes, etc., by hydrolyzing a specific anthraquinone in sulfuric acid. SOLUTION: (A) 1,5-Dibenzoylaminoanthraquinone is hydrolyzed in (B) sulfuric acid, preferably 50-100wt.% sulfuric acid at 0-50 deg.C within 15hr. Furthermore, in the case of 98% sulfuric acid, the component B is used in an amount of about 5-40 pts.wt. based on 1 pt.wt. component A and a material produced as a by-product when the objective compound is produced by using 1,5- diaminoanthraquinone as a raw material is preferably used as the component A and purity of the resultant product can preferably be improved by filtering the product after adding the component B.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、1,5−ジベンゾ
イルアミノアントラキノンから、1−アミノ−5−ベン
ゾイルアミノアントラキノンを製造する方法に関する。
TECHNICAL FIELD The present invention relates to a method for producing 1-amino-5-benzoylaminoanthraquinone from 1,5-dibenzoylaminoanthraquinone.

【0002】[0002]

【従来の技術】本発明の目的化合物1−アミノ−5−ベ
ンゾイルアミノアントラキノン(以下、ABAQと略記
することがある)は、古くから染料等の中間体として重
要な化合物であることが良く知られている。このABA
Qを製造する方法としてこれまでに種々の方法が開示さ
れている。一般には、FIAT1313並びに理論製造
染料化学(細田豊著)に記載されているように、1,5
−ジアミノアントラキノン(以下、DAAQと略記する
ことがある)を有機溶剤中で塩化ベンゾイルと反応する
方法が古くから知られている。
BACKGROUND OF THE INVENTION The object compound of the present invention, 1-amino-5-benzoylaminoanthraquinone (hereinafter sometimes abbreviated as ABAQ), has long been known to be an important compound as an intermediate for dyes and the like. ing. This ABA
Various methods have been disclosed so far for manufacturing Q. Generally, as described in FIAT 1313 and theoretical dye chemistry (Yutaka Hosoda), 1,5
A method of reacting diaminoanthraquinone (hereinafter sometimes abbreviated as DAAQ) with benzoyl chloride in an organic solvent has long been known.

【0003】これら従来技術では、反応中に1,5−ジ
ベンゾイルアミノアントラキノン(以下、DBAQと略
記することがある)が副生する。このDBAQは、イン
ジゴエロー1として知られるスレン染料であるが、多く
の場合、アルカリ中で加水分解し、DAAQとして回収
し、再度ABAQの製造に用いていた。しかしこれは、
ABAQの製造プロセスを煩雑化させる原因となってい
た。
In these conventional techniques, 1,5-dibenzoylaminoanthraquinone (hereinafter sometimes abbreviated as DBAQ) is by-produced during the reaction. This DBAQ is a slene dye known as indigo yellow 1, but in many cases, it was hydrolyzed in alkali, recovered as DAAQ, and used again for the production of ABAQ. But this is
This has been a cause of complicating the manufacturing process of ABAQ.

【0004】[0004]

【発明が解決しようとする課題】本発明者らは、ABA
Q製造時に副生するDBAQを、原料のDAAQへ戻す
ことなく1つのベンゾイル基のみを分解し、目的のAB
AQへ誘導できれば画期的な方法となり得ると考えた。
実際、そのような反応は知られていなかった。そこで、
本発明は、DBAQを原料とし、効率的にABAQを得
ることを課題とする。
DISCLOSURE OF THE INVENTION The present inventors have found that ABA
Q By decomposing only one benzoyl group without returning DBAQ, which is a by-product of production, to DAAQ as a raw material, the desired AB
We thought that it would be an epoch-making method if it could be induced to AQ.
In fact, no such reaction was known. Therefore,
An object of the present invention is to efficiently obtain ABAQ using DBAQ as a raw material.

【0005】[0005]

【課題を解決するための手段】本発明者らは、上記問題
を解決するために鋭意検討した結果、工業的に極めて価
値のある方法を見出し、本発明を完成した。即ち、本発
明は、1,5−ジベンゾイルアミノアントラキノンを硫
酸中で加水分解させることを特徴とする1−アミノ−5
−ベンゾイルアミノアントラキノンの製造方法を提供す
るものである。
Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above problems, and as a result, have found an industrially extremely valuable method, and have completed the present invention. That is, the present invention is characterized in that 1,5-dibenzoylaminoanthraquinone is hydrolyzed in sulfuric acid. 1-amino-5
-Provides a method for producing benzoylaminoanthraquinone.

【0006】[0006]

【発明の実施の形態】以下、本発明を詳細に説明する。
本発明の方法において、具体的な方法の一例を示せば、
0〜50℃において、50〜100重量%の硫酸にDB
AQを加える。0〜50℃で所定時間撹拌し、水に排出
する。析出した結晶を濾取し、水洗浄することにより、
目的のABAQを製造することができる。
BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below.
In the method of the present invention, if an example of a specific method is shown,
DB at 50-100 wt% sulfuric acid at 0-50 ° C
Add AQ. Stir at 0-50 ° C. for a specified time and drain into water. By collecting the precipitated crystals by filtration and washing with water,
The desired ABAQ can be produced.

【0007】本発明の方法において、使用する硫酸濃度
は、50〜100重量%、好ましくは60〜98%であ
る。その使用量は、例えば工業的によく使用する98%
硫酸の場合は、DBAQ1重量部に対し、通常2〜10
0重量部、好ましくは5〜40重量部である。
In the method of the present invention, the sulfuric acid concentration used is 50 to 100% by weight, preferably 60 to 98%. The amount used is, for example, 98% that is often used industrially.
In the case of sulfuric acid, it is usually 2 to 10 parts by weight with respect to DBAQ.
0 parts by weight, preferably 5 to 40 parts by weight.

【0008】本発明の方法において、硫酸中にDBAQ
を加える温度は、通常0〜80℃、好ましくは5〜50
℃で行う。本発明の方法において、DBAQを添加後、
撹拌する温度、即ち加水分解を行う温度は、通常0〜5
0℃、好ましくは2〜40℃で行う。また、撹拌時間
は、通常24時間以内、好ましくは15時間以内が工業
的に効率的であり、高収率でABAQが得られる。
In the method of the present invention, DBAQ is added to sulfuric acid.
The temperature at which is added is usually 0 to 80 ° C., preferably 5 to 50
Perform at ° C. In the method of the present invention, after adding DBAQ,
The stirring temperature, that is, the temperature at which hydrolysis is carried out is usually 0 to 5
It is carried out at 0 ° C, preferably 2 to 40 ° C. The stirring time is usually within 24 hours, preferably within 15 hours, which is industrially efficient, and ABAQ can be obtained in high yield.

【0009】更に、本発明方法において得られたABA
Qを硫化物添加後、ろ過すること等で、更に純度を向上
させることも可能である。
Further, the ABA obtained by the method of the present invention
It is possible to further improve the purity by filtering Q after adding sulfide to Q.

【0010】[0010]

【実施例】以下、実施例により本発明を更に説明する
が、本発明はその要旨を越えないかぎり、以下の実施例
に限定されるものではない。また、文中「収率」とある
のは、DAAQに対するABAQの収率を示す。また、
純度分析は、高速液体クロマトグラフィー(以下、HP
LCと略す。)で行った。
EXAMPLES The present invention will be described in more detail with reference to the following Examples, which, however, are not intended to limit the scope of the invention. In addition, “Yield” in the text means the yield of ABAQ with respect to DAAQ. Also,
Purity analysis is performed by high performance liquid chromatography (hereinafter referred to as HP
Abbreviated as LC. ) Went.

【0011】実施例1 5〜20℃に保ちながら、DBAQ10gを98%硫酸
400gに溶解させ、これを20℃で3.5時間撹拌し
た。この反応混合物を、氷水2000gに排出し、10
〜15℃で1時間撹拌した。析出した結晶部を濾取し、
水洗した。結晶部を乾燥させると、目的物7.6gを得
た。HPLC分析の結果、DAAQに対する純度換算収
率は82%であった。 HPLC分析結果 ABAQ 83.1% DBAQ 12.6% DAAQ 0.0%
Example 1 While maintaining the temperature at 5 to 20 ° C, 10 g of DBAQ was dissolved in 400 g of 98% sulfuric acid, and this was stirred at 20 ° C for 3.5 hours. The reaction mixture was discharged into 2000 g of ice water,
Stirred at ~ 15 ° C for 1 hour. The precipitated crystal part is collected by filtration,
Washed with water. The crystal part was dried to obtain 7.6 g of the target product. As a result of HPLC analysis, the yield in terms of purity based on DAAQ was 82%. HPLC analysis results ABAQ 83.1% DBAQ 12.6% DAAQ 0.0%

【0012】実施例2 40℃以下に保ちながら、DBAQ40gを60%硫酸
200gに懸濁させ、これを50℃で10時間撹拌し
た。この反応混合物を、氷水2000gに排出し、20
〜25℃で1時間撹拌した。析出した結晶部を濾取し、
水洗した。結晶部を乾燥させると、目的物31.4gを
得た。HPLC分析の結果、DAAQに対する純度換算
収率は79%であった。 HPLC分析結果 ABAQ 77.9% DBAQ 8.2% DAAQ 4.3%
Example 2 While maintaining the temperature below 40 ° C, 40 g of DBAQ was suspended in 200 g of 60% sulfuric acid, and this was stirred at 50 ° C for 10 hours. The reaction mixture was discharged into 2000 g of ice water,
Stir at ~ 25 ° C for 1 hour. The precipitated crystal part is collected by filtration,
Washed with water. The crystal part was dried to obtain 31.4 g of the desired product. As a result of HPLC analysis, the yield in terms of purity based on DAAQ was 79%. HPLC analysis results ABAQ 77.9% DBAQ 8.2% DAAQ 4.3%

【0013】[0013]

【発明の効果】本発明の方法によれば、1,5−ジベン
ゾイルアミノアントラキノンを硫酸中で加水分解するこ
とにより、高収率で1−アミノ−5−ベンゾイルアミノ
アントラキノンを得ることができる。即ち、本発明は、
工業的に効率のよい、極めて価値のある方法である。
According to the method of the present invention, 1-amino-5-benzoylaminoanthraquinone can be obtained in high yield by hydrolyzing 1,5-dibenzoylaminoanthraquinone in sulfuric acid. That is, the present invention
It is an industrially efficient and extremely valuable method.

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 1,5−ジベンゾイルアミノアントラキ
ノンを硫酸中で加水分解させることを特徴とする1−ア
ミノ−5−ベンゾイルアミノアントラキノンの製造方
法。
1. A method for producing 1-amino-5-benzoylaminoanthraquinone, which comprises hydrolyzing 1,5-dibenzoylaminoanthraquinone in sulfuric acid.
【請求項2】 硫酸濃度が50〜100重量%である請
求項1記載の方法。
2. The method according to claim 1, wherein the sulfuric acid concentration is 50 to 100% by weight.
【請求項3】 加水分解する温度が0〜50℃である請
求項1又は2記載の方法。
3. The method according to claim 1, wherein the hydrolysis temperature is 0 to 50 ° C.
JP8248896A 1996-04-04 1996-04-04 Production of 1-amino-5-benzoylaminoanthraquinone Pending JPH09268168A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8248896A JPH09268168A (en) 1996-04-04 1996-04-04 Production of 1-amino-5-benzoylaminoanthraquinone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8248896A JPH09268168A (en) 1996-04-04 1996-04-04 Production of 1-amino-5-benzoylaminoanthraquinone

Publications (1)

Publication Number Publication Date
JPH09268168A true JPH09268168A (en) 1997-10-14

Family

ID=13775897

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8248896A Pending JPH09268168A (en) 1996-04-04 1996-04-04 Production of 1-amino-5-benzoylaminoanthraquinone

Country Status (1)

Country Link
JP (1) JPH09268168A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011072445A1 (en) * 2009-12-17 2011-06-23 徐州开达精细化工有限公司 Preparation method of original dye of vat brown r

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011072445A1 (en) * 2009-12-17 2011-06-23 徐州开达精细化工有限公司 Preparation method of original dye of vat brown r

Similar Documents

Publication Publication Date Title
JPS6351358A (en) Production of ditertiary butyl dicarbonate
JPH09268168A (en) Production of 1-amino-5-benzoylaminoanthraquinone
US4213909A (en) Process for the preparation of 1-amino-4-bromoanthraquinone-2-sulfonic acid II
RU2130449C1 (en) Method of synthesis of 3,4-dihydroxy-5-nitrobenzaldehyde
JP2971291B2 (en) Production method of optically active 2-aminobutyric acid
US4246180A (en) Process for separating off 1-amino-4-bromoanthraquinone-2-sulphonic acid
JP2006193444A (en) Method for producing 4,4'-dicarboxy-2,2'-bipyridine
JP3244622B2 (en) Benzanthrone bromination method
JPH021443A (en) Preparation of anthraquinone base acylamine
JPS6030304B2 (en) Method for producing anthraquinone intermediates
JPS58192862A (en) Cis-beta-(trimethylammonium)-acrylonitriltosylate
US685895A (en) Process of purifying anthracene.
JPH02243662A (en) Production of aminobenzanthrones
JPS6351146B2 (en)
KR100198829B1 (en) Process for preparation of 4-aminophenyl-2-acetoxyethylsulfone
JP3061357B2 (en) Method for producing 2-methyl-5-nitrophenol
JPS6081144A (en) Production of alpha-halogeno-beta-phenylpropionic acid
JPH0967359A (en) Production of tetrachlorophthalic anhydride
CN112521311A (en) Improved lacosamide intermediate preparation method
JPH0541637B2 (en)
JPH0413657A (en) Production of 2,4-diaminobenzenesulfonic acid
JP3020415B2 (en) Method for producing aminobenzanthrones
JPH09263571A (en) Purification of 1-amino-5-benzoylaminoanthraquinone
JPS5925773B2 (en) 1. Method for producing 5-diphenoxy-anthraquinone
JPH10139751A (en) Production of 2-n-alkoxycarbonyl-2,3-diaminopropionic acid