SU427016A1 - METHOD FOR OBTAINING 4H-3,1-BENZOXAZIN-4-OH-2-CARBIC ACID AMIDES1 The invention relates to the preparation of the 4H-3,1-benzoxazin-4-one-2-amides - carboxylic acid. These amides are not described in the literature, their method of preparation is not known. Chemically, they are highly active compounds and are of interest as intermediates for organic sietez, including for the production of biologically active compounds. In particular, on the basis of these amides, amides of 4 (3H) -quinazolo; n-2-carboxylic acid can be obtained, which, according to literature data, represent HiHTOpec as drugs with P-vitamin activity. In the literature A 4N-3, .1-benzoxazn-4-one-2-carboxylic acid ester preparation method is known to react oxamoyl anthranilic acid ethyl ester with acetic anhydride, followed by isolation of the products by a known method. However, the 4H-3,1-benzoxazium-4-one-2-carboxylic acid amides, as the method of their preparation, were not previously known. A method for preparing the 4H-3,1-benzoxazip-4-one-2-carboxylic acid amides is proposed. of the general formula ICONHR10, where R is hydrogen, normal or isoalkyl, consisting in the fact that the amide of oxamoyl anthranilic acid of the general formula . Methylamide 4H-3,1-benzoxazip-4-one-2-carboxylic acid. 8 g of 1M-1 methyl-ox-M'OIyl "tra". Methyl acid (II, R-CH3) in 16 ml of acetic angndrum is heated under reflux. After 10 minutes from the start of heating, the acid is completely dissolved, heating is continued for another 10 minutes. Upon cooling, a precipitate is released. To the reaction mass was added 10 ml of absolute ether. Sediment filter - Google Patents
METHOD FOR OBTAINING 4H-3,1-BENZOXAZIN-4-OH-2-CARBIC ACID AMIDES1 The invention relates to the preparation of the 4H-3,1-benzoxazin-4-one-2-amides - carboxylic acid. These amides are not described in the literature, their method of preparation is not known. Chemically, they are highly active compounds and are of interest as intermediates for organic sietez, including for the production of biologically active compounds. In particular, on the basis of these amides, amides of 4 (3H) -quinazolo; n-2-carboxylic acid can be obtained, which, according to literature data, represent HiHTOpec as drugs with P-vitamin activity. In the literature A 4N-3, .1-benzoxazn-4-one-2-carboxylic acid ester preparation method is known to react oxamoyl anthranilic acid ethyl ester with acetic anhydride, followed by isolation of the products by a known method. However, the 4H-3,1-benzoxazium-4-one-2-carboxylic acid amides, as the method of their preparation, were not previously known. A method for preparing the 4H-3,1-benzoxazip-4-one-2-carboxylic acid amides is proposed. of the general formula ICONHR10, where R is hydrogen, normal or isoalkyl, consisting in the fact that the amide of oxamoyl anthranilic acid of the general formula . Methylamide 4H-3,1-benzoxazip-4-one-2-carboxylic acid. 8 g of 1M-1 methyl-ox-M'OIyl "tra". Methyl acid (II, R-CH3) in 16 ml of acetic angndrum is heated under reflux. After 10 minutes from the start of heating, the acid is completely dissolved, heating is continued for another 10 minutes. Upon cooling, a precipitate is released. To the reaction mass was added 10 ml of absolute ether. Sediment filterInfo
- Publication number
- SU427016A1 SU427016A1 SU1784460A SU1784460A SU427016A1 SU 427016 A1 SU427016 A1 SU 427016A1 SU 1784460 A SU1784460 A SU 1784460A SU 1784460 A SU1784460 A SU 1784460A SU 427016 A1 SU427016 A1 SU 427016A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- amides
- carboxylic acid
- acid
- preparation
- literature
- Prior art date
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- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
Description
тровывают, промывают эфиром и сушат на воздухе. Получают аналитически чистый продукт . Выход 6,3 г. Продукт кристаллизуют изStir, rinse with ether and air dry. Get analytically pure product. Yield 6.3 g. The product is crystallized from
Амиды 4Н-3,1-бензоксазин-4-он-2-карбоновой кислоты формулы ГAmides 4H-3,1-benzoxazin-4-one-2-carboxylic acid of formula G
толуола. Аналитические данные целевого продукта , а таклсе других целевых соединений приведены в таблице.toluene. Analytical data of the target product, as well as other target compounds are given in the table.
Предмет изобретени Способ получени амидов 4Н-3,1-беизоксазин-4-оц-2-карбоновой кислоты общей формулы где R - водород, нормальный или изо10 алкил, отличающийс тем, что амид оксамоилантраниловой кислоты общей формулы NHCOCONHR где R - имеет вышеуказанные значени , нагревают с уксусным ангидридом с последующим выделением целевого продукта известными приемами.The subject of the invention is a process for the preparation of 4H-3,1-beisoxazin-4-ox-2-carboxylic acid amides of the general formula where R is hydrogen, normal or iso alkyl, characterized in that the amide of oxamoyl anthranilic acid of general formula NHCOCONHR heated with acetic anhydride followed by isolation of the target product by known techniques.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1784460A SU427016A1 (en) | 1972-05-11 | 1972-05-11 | METHOD FOR OBTAINING 4H-3,1-BENZOXAZIN-4-OH-2-CARBIC ACID AMIDES1 The invention relates to the preparation of the 4H-3,1-benzoxazin-4-one-2-amides - carboxylic acid. These amides are not described in the literature, their method of preparation is not known. Chemically, they are highly active compounds and are of interest as intermediates for organic sietez, including for the production of biologically active compounds. In particular, on the basis of these amides, amides of 4 (3H) -quinazolo; n-2-carboxylic acid can be obtained, which, according to literature data, represent HiHTOpec as drugs with P-vitamin activity. In the literature A 4N-3, .1-benzoxazn-4-one-2-carboxylic acid ester preparation method is known to react oxamoyl anthranilic acid ethyl ester with acetic anhydride, followed by isolation of the products by a known method. However, the 4H-3,1-benzoxazium-4-one-2-carboxylic acid amides, as the method of their preparation, were not previously known. A method for preparing the 4H-3,1-benzoxazip-4-one-2-carboxylic acid amides is proposed. of the general formula ICONHR10, where R is hydrogen, normal or isoalkyl, consisting in the fact that the amide of oxamoyl anthranilic acid of the general formula . Methylamide 4H-3,1-benzoxazip-4-one-2-carboxylic acid. 8 g of 1M-1 methyl-ox-M'OIyl "tra". Methyl acid (II, R-CH3) in 16 ml of acetic angndrum is heated under reflux. After 10 minutes from the start of heating, the acid is completely dissolved, heating is continued for another 10 minutes. Upon cooling, a precipitate is released. To the reaction mass was added 10 ml of absolute ether. Sediment filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1784460A SU427016A1 (en) | 1972-05-11 | 1972-05-11 | METHOD FOR OBTAINING 4H-3,1-BENZOXAZIN-4-OH-2-CARBIC ACID AMIDES1 The invention relates to the preparation of the 4H-3,1-benzoxazin-4-one-2-amides - carboxylic acid. These amides are not described in the literature, their method of preparation is not known. Chemically, they are highly active compounds and are of interest as intermediates for organic sietez, including for the production of biologically active compounds. In particular, on the basis of these amides, amides of 4 (3H) -quinazolo; n-2-carboxylic acid can be obtained, which, according to literature data, represent HiHTOpec as drugs with P-vitamin activity. In the literature A 4N-3, .1-benzoxazn-4-one-2-carboxylic acid ester preparation method is known to react oxamoyl anthranilic acid ethyl ester with acetic anhydride, followed by isolation of the products by a known method. However, the 4H-3,1-benzoxazium-4-one-2-carboxylic acid amides, as the method of their preparation, were not previously known. A method for preparing the 4H-3,1-benzoxazip-4-one-2-carboxylic acid amides is proposed. of the general formula ICONHR10, where R is hydrogen, normal or isoalkyl, consisting in the fact that the amide of oxamoyl anthranilic acid of the general formula . Methylamide 4H-3,1-benzoxazip-4-one-2-carboxylic acid. 8 g of 1M-1 methyl-ox-M'OIyl "tra". Methyl acid (II, R-CH3) in 16 ml of acetic angndrum is heated under reflux. After 10 minutes from the start of heating, the acid is completely dissolved, heating is continued for another 10 minutes. Upon cooling, a precipitate is released. To the reaction mass was added 10 ml of absolute ether. Sediment filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU427016A1 true SU427016A1 (en) | 1974-05-05 |
Family
ID=20514180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1784460A SU427016A1 (en) | 1972-05-11 | 1972-05-11 | METHOD FOR OBTAINING 4H-3,1-BENZOXAZIN-4-OH-2-CARBIC ACID AMIDES1 The invention relates to the preparation of the 4H-3,1-benzoxazin-4-one-2-amides - carboxylic acid. These amides are not described in the literature, their method of preparation is not known. Chemically, they are highly active compounds and are of interest as intermediates for organic sietez, including for the production of biologically active compounds. In particular, on the basis of these amides, amides of 4 (3H) -quinazolo; n-2-carboxylic acid can be obtained, which, according to literature data, represent HiHTOpec as drugs with P-vitamin activity. In the literature A 4N-3, .1-benzoxazn-4-one-2-carboxylic acid ester preparation method is known to react oxamoyl anthranilic acid ethyl ester with acetic anhydride, followed by isolation of the products by a known method. However, the 4H-3,1-benzoxazium-4-one-2-carboxylic acid amides, as the method of their preparation, were not previously known. A method for preparing the 4H-3,1-benzoxazip-4-one-2-carboxylic acid amides is proposed. of the general formula ICONHR10, where R is hydrogen, normal or isoalkyl, consisting in the fact that the amide of oxamoyl anthranilic acid of the general formula . Methylamide 4H-3,1-benzoxazip-4-one-2-carboxylic acid. 8 g of 1M-1 methyl-ox-M'OIyl "tra". Methyl acid (II, R-CH3) in 16 ml of acetic angndrum is heated under reflux. After 10 minutes from the start of heating, the acid is completely dissolved, heating is continued for another 10 minutes. Upon cooling, a precipitate is released. To the reaction mass was added 10 ml of absolute ether. Sediment filter |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU427016A1 (en) |
-
1972
- 1972-05-11 SU SU1784460A patent/SU427016A1/en active
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