GB311047A - Improvements in the manufacture and production of condensation products of the benzanthrone series - Google Patents
Improvements in the manufacture and production of condensation products of the benzanthrone seriesInfo
- Publication number
- GB311047A GB311047A GB808428A GB808428A GB311047A GB 311047 A GB311047 A GB 311047A GB 808428 A GB808428 A GB 808428A GB 808428 A GB808428 A GB 808428A GB 311047 A GB311047 A GB 311047A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- treating
- product
- converted
- products
- 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
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B5/00—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
- C09B5/24—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings the heterocyclic rings being only condensed with an anthraquinone nucleus in 1-2 or 2-3 position
- C09B5/2409—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings the heterocyclic rings being only condensed with an anthraquinone nucleus in 1-2 or 2-3 position not provided for in one of the sub groups C09B5/26 - C09B5/62
- C09B5/2427—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings the heterocyclic rings being only condensed with an anthraquinone nucleus in 1-2 or 2-3 position not provided for in one of the sub groups C09B5/26 - C09B5/62 only sulfur-containing hetero rings
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Abstract
311,047. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). March 16, 1928, Benzanthrone derivatives.-Alkali-soluble condensation products of the benzanthrone series are obtained by treating Bz-1-benzanthronylthioglycollic acid, or its derivatives or substitution products having free 2-positions, with alkaline condensing agents. The products are converted into green-blue vat dyes by treating with mild oxidizing agents, for example, by treating the alkaline solutions with air or other oxidizing agents, such as ammonium persulphate, or by heating the dried intermediate products with nitrobenzene or with inert solvents, such as trichlorbenzene, in presence of air, or by warming their solutions in concentrated sulphuric acid. The esters, amides and nitriles of the thioglycollic acids, and also their oxidation products (presumably sulphoxides) having free 2-positions, may also be used as parent materials. According to examples, (1) Bz-1-benzanthronylthioglycollic acid is fused with caustic potash or a mixture of caustic potash and caustic soda in the presence or absence of water, the melt is diluted with water, filtered and treated with hydrochloric acid to precipitate the intermediate product, which may be converted into the vat dye by drying and boiling with nitrobenzene, or the vat dye may be obtained directly by passing air through the filtered alkaline solution; 6-chlor-Bz1-benzanthronylthioglycollic acid (obtained by brominating 6-chlorbenzanthrone in nitrobenzene, converting the resulting 6-chlor- Bz1-brombenzanthrone into the sodium salt of 6-chlor-Bz1-benzanthronemercaptan by heating with sodium sulphide and sulphur in alcoholic solution, and treating the product with sodium monochloracetate in aqueous solution) gives similar products, (2) Bz-1-benzanthronylthioglycollic acid is heated with caustic potash in pyridine, and the product converted into the vat dye as described in Example 1, (3) the ethyl ester of Bz-1-thioglycollic acid (obtained by heating the acid with ethyl alcohol and concentrated sulphuric acid) is heated with caustic potash in pyridine, and the intermediate product converted into the vat dye as described in Example 1; other esters may be used instead of the ethyl ester; (4) Bz-1- benzanthronylthioglycollonitrile (made by condensing sodium Bz-1-benzanthronylmercaptide with monochloracetonitrile) and Bz-1-benzanthronylthioglycollicamide (made by treating the nitrile with sulphuric acid at ordinary temperatures) are employed in a similar manner; (5) the oxidation product of Bz-1-benzanthronylthioglycollic acid (obtained by oxidizing the acid with the amount, calculated for the production of a sulphoxide, of ammonium persulphate, or concentrated nitric acid, or hydrogen peroxide in concentrated sulphuric acid, or by treating in aqueous solution of an alkali salt of the acid with sodium hypochlorite) is heated with caustic potash and water or ethyl alcohol; the product can be converted into a vat dye in the manner described in Example 1, and (6) the methyl ester of the oxidation product referred to in the preceding example (obtained by treating the oxidation product with methyl alcohol and sulphuric acid) is heated with caustic potash in pyridine, and the product converted into a vat dye in the manner described in Example 1; the amide and nitrile of the oxidation product (obtained by treating the amide or nitrile of Bz1-benzenthronylthioglycollic acid with ammonium persulphate or hydrogen peroxide in concentrated sulphuric acid) may be similarly treated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB808428A GB311047A (en) | 1928-03-16 | 1928-03-16 | Improvements in the manufacture and production of condensation products of the benzanthrone series |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB808428A GB311047A (en) | 1928-03-16 | 1928-03-16 | Improvements in the manufacture and production of condensation products of the benzanthrone series |
Publications (1)
Publication Number | Publication Date |
---|---|
GB311047A true GB311047A (en) | 1929-05-09 |
Family
ID=9845434
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB808428A Expired GB311047A (en) | 1928-03-16 | 1928-03-16 | Improvements in the manufacture and production of condensation products of the benzanthrone series |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB311047A (en) |
-
1928
- 1928-03-16 GB GB808428A patent/GB311047A/en not_active Expired
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