Rubrocurcumin
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| Surname | Rubrocurcumin | ||||||||||||
| Molecular formula | C 23 H 19 BO 10 | ||||||||||||
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| Molar mass | 466.19 g mol −1 | ||||||||||||
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| As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . | |||||||||||||
Rubrocurcumin is a chelate complex that is formed from the pigment curcumin with oxalic acid and borates .
Presentation and extraction
The reaction of curcumin with borates in the presence of oxalic acid produces rubrocurcumin.
properties
Rubrocurcumin has a red color in solution. Compared to rosocyanine , one molecule of curcumin has been replaced by oxalic acid in rubrocurcumin . Rubrocurcumin is an externally neutral compound, while rosocyanine is an ionically built dye. Boron complexes like rubrocurcumin are known as 1,3,2-dioxaborines.
literature
- GS Spicer, JDH Strickland: Compounds of curcumin and boric acid. Part II. The structure of rubrocurcumin . Journal of the Chemical Society , London 1952, pp. 4650-4653
swell
- ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
- ↑ a b Dirk Rohde: Presentation and property investigations on 1,3,2-dioxaborines with variable coligands on the boron atom . Dissertation, 2002.