GB1373213A - Process for the manufacture of 1/ 4- dichloroanthraquinone - Google Patents
Process for the manufacture of 1/ 4- dichloroanthraquinoneInfo
- Publication number
- GB1373213A GB1373213A GB4008671A GB4008671A GB1373213A GB 1373213 A GB1373213 A GB 1373213A GB 4008671 A GB4008671 A GB 4008671A GB 4008671 A GB4008671 A GB 4008671A GB 1373213 A GB1373213 A GB 1373213A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dichloroanthraquinone
- manufacture
- aug
- compound
- formula
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C46/00—Preparation of quinones
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C50/00—Quinones
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1373213 Preparation of 1,4-dichloroanthraquinone IMPERIAL CHEMICAL INDUSTRIES Ltd 4 Aug 1972 [26 Aug 1971] 40086/71 Heading C2C The invention comprises a process for the preparation of 1,4-dichloroanthraquinone in which a compound of Formula I or a tautomer thereof, is reacted with thionyl chloride. The compound of Formula I may be prepared in situ by heating a mixture of thionyl chloride and 1,4-dihydroxyanthraquinone.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4008671A GB1373213A (en) | 1971-08-26 | 1971-08-26 | Process for the manufacture of 1/ 4- dichloroanthraquinone |
DE2240518A DE2240518A1 (en) | 1971-08-26 | 1972-08-17 | PROCESS FOR THE PREPARATION OF 1,4-DICHLORANTHRAQUINONE |
JP47085791A JPS4831233A (en) | 1971-08-26 | 1972-08-26 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4008671A GB1373213A (en) | 1971-08-26 | 1971-08-26 | Process for the manufacture of 1/ 4- dichloroanthraquinone |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1373213A true GB1373213A (en) | 1974-11-06 |
Family
ID=10413139
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4008671A Expired GB1373213A (en) | 1971-08-26 | 1971-08-26 | Process for the manufacture of 1/ 4- dichloroanthraquinone |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPS4831233A (en) |
DE (1) | DE2240518A1 (en) |
GB (1) | GB1373213A (en) |
-
1971
- 1971-08-26 GB GB4008671A patent/GB1373213A/en not_active Expired
-
1972
- 1972-08-17 DE DE2240518A patent/DE2240518A1/en active Pending
- 1972-08-26 JP JP47085791A patent/JPS4831233A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
JPS4831233A (en) | 1973-04-24 |
DE2240518A1 (en) | 1973-03-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |