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| | 2,3-DIOXOINDOLINE-7-CARBOXYLIC ACID Basic information |
| Product Name: | 2,3-DIOXOINDOLINE-7-CARBOXYLIC ACID | | Synonyms: | 2,3-DIOXOINDOLINE-7-CARBOXYLIC ACID;2,3-Dioxoindoline-7-carboxylic acid, 2,3-Dihydro-2,3-dioxo-1H-indole-7-carboxylic acid;2,3-dioxo-1H-indole-7-carboxylic acid;2,3-Dioxoindoline-7-Carboxylic;2,3-dioxo-2,3-dihydro-1H-indole-7-carboxylic acid;2,3-Dioxoindoline-7-carboxylic acid, 2,3-Dihydro-2,3-dioxo-1H-indole-7-carboxylic a;1H-Indole-7-carboxylic acid, 2,3-dihydro-2,3-dioxo-;2,3-dioxoindoline-7-carboxylic acid - [D85935] | | CAS: | 25128-35-2 | | MF: | C9H5NO4 | | MW: | 191.14 | | EINECS: | 1533716-785-6 | | Product Categories: | Carboxylic Acids;Carboxylic Acids;Fused Ring Systems | | Mol File: | 25128-35-2.mol |  |
| | 2,3-DIOXOINDOLINE-7-CARBOXYLIC ACID Chemical Properties |
| Melting point | 268 °C | | density | 1.591±0.06 g/cm3(Predicted) | | storage temp. | Sealed in dry,Room Temperature | | pka | 2.66±0.20(Predicted) | | form | crystalline powder | | color | Orange | | CAS DataBase Reference | 25128-35-2(CAS DataBase Reference) |
| | 2,3-DIOXOINDOLINE-7-CARBOXYLIC ACID Usage And Synthesis |
| Synthesis | Step I. Synthesis of 2,3-dioxoindoline-7-carbonitrile To a 100 ml three-necked flask equipped with a stirrer, a thermometer and a reflux condenser tube was added 2,3-dioxoindoline-7-carbaldehyde, hydroxylamine hydrochloride, sodium acetate, 30 mL of glacial acetic acid and 1 mL of acetic anhydride, and refluxed to react. After cooling, it was poured into ice water to precipitate a solid, filtered, washed with water and dried, and recrystallized to obtain 2,3-dioxoindoline-7-carbonitrile. Step II, Synthesis of 2,3-dioxoindoline-7-carboxylic acid To a 100 ml three-necked flask equipped with a stirrer, a thermometer and a reflux condenser tube was added 2,3-dioxoindoline-7-carbonitrile, NaOH, water, and refluxed to react. After cooling and filtration, the filtrate was acidified with dilute hydrochloric acid to pH<3, a solid was precipitated, filtered and dried to obtain the compound 2,3-dioxoindoline-7-carboxylic acid. |
| | 2,3-DIOXOINDOLINE-7-CARBOXYLIC ACID Preparation Products And Raw materials |
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