ES459524A1 - Obtaining procedure of 5-5-dioxide of 7-hydroxi-3h-4himidazo (4.5-c-1,2,6) tiadiacin. (Machine-translation by Google Translate, not legally binding) - Google Patents
Obtaining procedure of 5-5-dioxide of 7-hydroxi-3h-4himidazo (4.5-c-1,2,6) tiadiacin. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES459524A1 ES459524A1 ES459524A ES459524A ES459524A1 ES 459524 A1 ES459524 A1 ES 459524A1 ES 459524 A ES459524 A ES 459524A ES 459524 A ES459524 A ES 459524A ES 459524 A1 ES459524 A1 ES 459524A1
- Authority
- ES
- Spain
- Prior art keywords
- dioxide
- stage
- hydroxy
- see image
- thiadiazine
- 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
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
Abstract
Procedure for obtaining 5,5-dioxide of 7-hydroxy-3h-4h-imidazo [4,5-c] [1,2,6] thiadiazine (I) *** see image 01 which procedure involves the realization of the following four reaction stages: stage 1: condensation between the dipotassium salt of sulfonamide and ethyl cyanoacetate to give 5-amino-3-hydroxy-4h-1,2,6-thiadiazine 1,1-dioxide (II). *** see image 02 stage 2 .: reaction between compound ii obtained in the first stage with sodium nitrite and acetic acid. When operating in an alkaline medium, the formation of 1,1-dioxide of 5-amino-3-hydroxy-4-hydroximino-4h-1,2,6-thiadiazine (III) takes place *** see image 03 stage 3a. : catalytic reduction of compound iii obtained in the second stage with pt2o as catalyst, in ethanolic medium, to give 4,5-diamino-3-hydroxy-6h-1 2,6-thiadiazine 1,1-dioxide (IV) * ** see image 04 stage 4a: treatment of compound iv, obtained in the third stage, with potassium dithioformate in aqueous medium, to give 5,5-dioxide of 7-hydroxy-3h-4h-imidazo [4-5-c] ] [1,2,6] thiadizine (IV) *** see image 05 (Machine-translation by Google Translate, not legally binding)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES459524A ES459524A1 (en) | 1977-06-06 | 1977-06-06 | Obtaining procedure of 5-5-dioxide of 7-hydroxi-3h-4himidazo (4.5-c-1,2,6) tiadiacin. (Machine-translation by Google Translate, not legally binding) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES459524A ES459524A1 (en) | 1977-06-06 | 1977-06-06 | Obtaining procedure of 5-5-dioxide of 7-hydroxi-3h-4himidazo (4.5-c-1,2,6) tiadiacin. (Machine-translation by Google Translate, not legally binding) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES459524A1 true ES459524A1 (en) | 1978-04-16 |
Family
ID=8473957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES459524A Expired ES459524A1 (en) | 1977-06-06 | 1977-06-06 | Obtaining procedure of 5-5-dioxide of 7-hydroxi-3h-4himidazo (4.5-c-1,2,6) tiadiacin. (Machine-translation by Google Translate, not legally binding) |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES459524A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022139249A1 (en) * | 2020-12-23 | 2022-06-30 | 경북대학교 산학협력단 | Polysubstituted imidazole[4,5-c][1,2]thiazine derivative and use thereof |
-
1977
- 1977-06-06 ES ES459524A patent/ES459524A1/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022139249A1 (en) * | 2020-12-23 | 2022-06-30 | 경북대학교 산학협력단 | Polysubstituted imidazole[4,5-c][1,2]thiazine derivative and use thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FD1A | Patent lapsed |
Effective date: 19990201 |