A Colour Reaction for Thiosulphinates
INVESTIGATIONS of the chemistry of the thiolsulphinates, both synthetic and of natural provenance, would be aided if a rapid colorimetric test for these compounds were available. Aliphatic thiolsulphinates can be characterized, in part at least, by reaction with thiamine 1 or with cysteine 2 to yiel...
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Veröffentlicht in: | Nature (London) 1959-06, Vol.183 (4676), p.1673-1673 |
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Hauptverfasser: | , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | INVESTIGATIONS of the chemistry of the thiolsulphinates, both synthetic and of natural provenance, would be aided if a rapid colorimetric test for these compounds were available. Aliphatic thiolsulphinates can be characterized, in part at least, by reaction with thiamine
1
or with cysteine
2
to yield crystalline derivatives; but these methods do not generally distinguish thiolsulphinates from thiolsulphonates, since the latter compounds will also react with these reagents. The addition of sodium nitroprusside
3
solution followed by base will yield orange to red colours in the presence of aliphatic thiolsulphinates or thiolsulphonates. This procedure has found application in paper chromatography
3
in investigations of the formation of thiolsulphinates in plants of the genus
Allium
. In our experience, the colour, however, is very fugitive and is apparently not produced by some aromatic thiolsulphinates. |
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ISSN: | 0028-0836 1476-4687 |
DOI: | 10.1038/1831673b0 |