RU2010120060A - METHOD FOR PRODUCING 3-SUBSTITUTED 1,2-BENZISOXOXAZOL-5,6-DICARBONITRILES - Google Patents
METHOD FOR PRODUCING 3-SUBSTITUTED 1,2-BENZISOXOXAZOL-5,6-DICARBONITRILES Download PDFInfo
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- RU2010120060A RU2010120060A RU2010120060/04A RU2010120060A RU2010120060A RU 2010120060 A RU2010120060 A RU 2010120060A RU 2010120060/04 A RU2010120060/04 A RU 2010120060/04A RU 2010120060 A RU2010120060 A RU 2010120060A RU 2010120060 A RU2010120060 A RU 2010120060A
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- Prior art keywords
- dicarbonitriles
- substituted
- benzisoxazole
- water
- reagents
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- 0 *C(c1n[o]c(cc2C#N)c1cc2C#N)=O Chemical compound *C(c1n[o]c(cc2C#N)c1cc2C#N)=O 0.000 description 1
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- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Способ получения 3-замещенных 1,2-бензизоксазол-5,6-дикарбонитрилов общей формулы ! ! где a R=4-Me-C6H4; b R=4-MeO-C6H4; c R=2-thienyl, ! заключающийся в том, что в качестве исходных реагентов для синтеза 3-замещенных 1,2-бензизоксазол-5,6-дикарбонитрилов используют 4-бром-5-нитрофталонитрил и натриевые соли производных 2,4-диоксобутановых кислот, взаимодействие указанных реагентов протекает при температуре 55…70°С и мольном соотношении 1:2 соответственно в течение 18-24 ч в растворе диметилформамида, затем реакционную массу разбавляют десятикратным избытком воды с Т=0…25°С, выделившийся смолистый осадок экстрагируют хлористым метиленом, тщательно промывают водой, хроматографируют на силикагеле, элюент (растворитель) упаривают, выпавший осадок отфильтровывают, перекристаллизовывают из спирта. The method of obtaining 3-substituted 1,2-benzisoxazole-5,6-dicarbonitriles of the General formula! ! where a R = 4-Me-C6H4; b R = 4-MeO-C6H4; c R = 2-thienyl,! consisting in the fact that 4-bromo-5-nitrophthalonitrile and sodium salts of derivatives of 2,4-dioxobutanoic acids are used as starting reagents for the synthesis of 3-substituted 1,2-benzisoxazole-5,6-dicarbonitriles, the interaction of these reagents proceeds at a temperature 55 ... 70 ° C and a molar ratio of 1: 2, respectively, for 18-24 hours in a solution of dimethylformamide, then the reaction mass is diluted with a ten-fold excess of water with T = 0 ... 25 ° C, the gummy precipitate formed is extracted with methylene chloride, washed thoroughly with water, chromatograph dissolved on silica gel (solvent) is evaporated, the precipitate was filtered off and recrystallized from alcohol.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2010120060/04A RU2446164C2 (en) | 2010-05-19 | 2010-05-19 | Method of producing 3-substituted 1,2-benzisoxazole-5,6-dicarbonitriles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2010120060/04A RU2446164C2 (en) | 2010-05-19 | 2010-05-19 | Method of producing 3-substituted 1,2-benzisoxazole-5,6-dicarbonitriles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RU2010120060A true RU2010120060A (en) | 2011-11-27 |
| RU2446164C2 RU2446164C2 (en) | 2012-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2010120060/04A RU2446164C2 (en) | 2010-05-19 | 2010-05-19 | Method of producing 3-substituted 1,2-benzisoxazole-5,6-dicarbonitriles |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU2446164C2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111704630A (en) * | 2020-07-06 | 2020-09-25 | 上海大学 | 3-Aroyl naphthisoxazole or 3-aroyl anthraisoxazole derivatives and synthesis method thereof |
-
2010
- 2010-05-19 RU RU2010120060/04A patent/RU2446164C2/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111704630A (en) * | 2020-07-06 | 2020-09-25 | 上海大学 | 3-Aroyl naphthisoxazole or 3-aroyl anthraisoxazole derivatives and synthesis method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2446164C2 (en) | 2012-03-27 |
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| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20140520 |