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Isatin |
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isatin [′ī·sə·tən]
(organic chemistry) C6H5NO2An indole substituted with oxygen at carbon position 2 and 3; crystallizes as red needles that are soluble in hot water; used in dye manufacture. Isatin a heterocyclic compound; yellowish red crystals. Melting point 203.5°C. Characterized by tautomerism, isatin exists both in the lactam (I) and lactim (II) forms:
Isatin is soluble in acetone, benzene, methanol, and hot water. It exhibits mild acidic and basic properties, correspondingly forming salts with acids and bases. It is readily acylated, alkylated, nitrated, halogenated, sulfonated, and so forth. Isatin can be obtained from aniline, by oxidation of indigo, and by other methods. Isatin and some of its derivatives are valuable intermediates in the manufacture of indigoid vat dyes; it is also used for the detection and photometric determination of thiophene in benzene (so-called indophenine reaction), pyrrole, and mercaptans in air and for the detection of Cu and Ag. Isatin-β3-oxime, a product of the interaction of isatin with hydroxylamine, is used for the detection and determination of U and for the detection of Ag, Co, and many other elements. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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No references found | Determination of indican, isatin, indirubin and indigotin in Isatis indigotica by liquid chromatography/electrospray ionization tandem mass spectrometry. They contain a substance called isatin which has a laxative effect because it stimulates contractions of the large bowel. |
Isatin |
ISARP ISARR ISARS ISART ISARU ISAS ISASA ISASC ISASF ISASI ISASM ISAST ISASUT ISAT ISATA Isatai Taimanov ISATAP Isatay Taymanov ISATCIS ISATD ISATE ISATEC Isatic Isatide Isatin IsatisIsatis tinctoria Isatis tinctoria Isatis tinctoria L Isatogen ISATP Isatropic ISATS ISATT ISAU ISAUA Isauri Isauri Isauria Isauria Isaurian Isaurian Decapolis Isaurian Decapolis Isaurian Dynasty Isaurians Isaurians isaurore ISAUU isauxesis ISAV ISAVE Isaw ISAWES ISAWS | |||||||
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