GB469633A - The manufacture of polycyclic condensation products - Google Patents
The manufacture of polycyclic condensation productsInfo
- Publication number
- GB469633A GB469633A GB22033/36A GB2203336A GB469633A GB 469633 A GB469633 A GB 469633A GB 22033/36 A GB22033/36 A GB 22033/36A GB 2203336 A GB2203336 A GB 2203336A GB 469633 A GB469633 A GB 469633A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- phenanthrene
- carboxylic acid
- phenyl
- chlorophenyl
- 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
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Compounds of the general formula <FORM:0469633/IV/1> (wherein one or more X's stand for substituents, two or more of which may together form another ring, and the other X's stand for hydrogen) or the corresponding benzyl compounds (the compounds employed in the parent Specification being excluded) are treated with agents suitable for splitting off hydrogen halide, such as strong alkaline agents, appropriately with the addition of high boiling tertiary bases. The products are intermediates for dyes and pharmaceutical products. In examples: (1) a - phenyl - o - chlorocinnamic or a - phenyl - o-chlorohydrocinnamic acid is heated with caustic potash and quinoline to give phenanthrene-9-carboxylic acid; (2) the condensation product from o-chlorbenzaldehyde and desoxybenzoin is treated similarly to give phenanthrene. A sample has been furnished under Sect. 2 (5) of a naphthopyrene carboxylic acid prepared by treating as in the examples the condensation product from pyrene-3-aldehyde and o-chlorphenylacetic acid. In the Specification as open to inspection under Sect. 91, the process of example 1 is carried out using a mixture of caustic potash and caustic soda, and the condensations of a - (o - chlorophenyl) - cinnamic acid to phenanthrene-9-carboxylic acid, of o-chloro-cis-stilbene (made from a -phenyl-o-chlorocinnamic acid by means of quinoline and copper) to phenanthrene, of a -(o-chlorophenyl)-p-methyl-cinnamic acid to 3-methyl-phenanthrene-9-carboxylic acid, and of the condensation product from N - ethylcarbazole - 3 - aldehyde with o-chlorophenyl acetic acid to a naphthocarbazole carboxylic acid are also described. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE469633X | 1935-08-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB469633A true GB469633A (en) | 1937-07-29 |
Family
ID=6541044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22033/36A Expired GB469633A (en) | 1935-08-10 | 1936-08-10 | The manufacture of polycyclic condensation products |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB469633A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2251242A (en) * | 1990-12-31 | 1992-07-01 | Robert Ramage | Protective group |
-
1936
- 1936-08-10 GB GB22033/36A patent/GB469633A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2251242A (en) * | 1990-12-31 | 1992-07-01 | Robert Ramage | Protective group |
| GB2251242B (en) * | 1990-12-31 | 1995-01-11 | Robert Ramage | Protecting compound |
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