Journal of the Chemical SocietyThe Society., 1949 |
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Page 1243
... isolated as a red amorphous powder , m . p . 150-155 ° , giving violet and deep wine - red colorations in alkali and concentrated sulphuric acid respectively . Owing to the small amount of material isolated ( 17 mg . ) and our inability ...
... isolated as a red amorphous powder , m . p . 150-155 ° , giving violet and deep wine - red colorations in alkali and concentrated sulphuric acid respectively . Owing to the small amount of material isolated ( 17 mg . ) and our inability ...
Page 1248
... isolated or identified . Band VI ( red , 2 mm . , 2.5 mg . ) : rubiadin 1 - methyl ether . The light yellow crystalline aggregates obtained from this band , on crystallisation from alcohol , had m . p . 282-284 ° , undepressed by an ...
... isolated or identified . Band VI ( red , 2 mm . , 2.5 mg . ) : rubiadin 1 - methyl ether . The light yellow crystalline aggregates obtained from this band , on crystallisation from alcohol , had m . p . 282-284 ° , undepressed by an ...
Page 1571
... isolated in small yield from Sandel- wood ( syn . Red Sandelwood or Santalwood ) , Pterocarpus santalinus ( Linn . ) , by Weidel ( Zeit . für Chem . , 1870 , 6 , 83 ) who assigned to it the empirical formula C , H , О5,0 · 5H2O , but ...
... isolated in small yield from Sandel- wood ( syn . Red Sandelwood or Santalwood ) , Pterocarpus santalinus ( Linn . ) , by Weidel ( Zeit . für Chem . , 1870 , 6 , 83 ) who assigned to it the empirical formula C , H , О5,0 · 5H2O , but ...
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Common terms and phrases
4-dinitrophenylhydrazone absorption acetic anhydride acetone acetyl acidified added aldehyde alkaline aluminium chloride Amer amine ammonia aniline aqueous sodium atom benzene boiling bromine Calc carbon catalyst CH₂ Chem chloroform citrinin colourless needles compound condensation containing cooled crystallised crystallised from alcohol crystals cyanide cyclisation decomp derivative dilute dissolved distilled dried electrode ester evaporated extracted with ether filtered filtrate formed colourless Found fraction gave give heated under reflux hydrochloric acid hydrogen chloride hydrolysis iodide isolated ketone lactone light petroleum b. p. m. p. and mixed methanol method methyl alcohol minutes mixed m. p. mixture molecule obtained oxide phenol phosphoric picrate potassium hydroxide precipitate prepared pyridine reaction reduced pressure requires residue resin room temperature salt separated sodium hydroxide solid soluble solution solvent specimen structure substance sulphuric acid triethylamine values washed yellow needles yield