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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- 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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- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (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.
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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 |
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| 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 |