Journal of the Chemical Society, Part 2Chemical Society., 1949 |
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Page 906
... reduced pressure to a thick syrup , freedom from barium and sulphate ions being checked during the evaporation of a more concentrated solution . The thick syrup was poured into anhydrous pyridine ( 3 1. ) which had been cooled below 0 ...
... reduced pressure to a thick syrup , freedom from barium and sulphate ions being checked during the evaporation of a more concentrated solution . The thick syrup was poured into anhydrous pyridine ( 3 1. ) which had been cooled below 0 ...
Page 1154
... reduced pressure . This gave a solid , b . p . 170-200 ° / 1 · 5 mm . , which was crystallised from ethanol to give colourless crystals of 6 : 6 ′ - diamino - 2 : 2 ′ : 4 : 4 ′ - tetramethyl- diphenylmethane , m . p . 122-123 ° ( Found ...
... reduced pressure . This gave a solid , b . p . 170-200 ° / 1 · 5 mm . , which was crystallised from ethanol to give colourless crystals of 6 : 6 ′ - diamino - 2 : 2 ′ : 4 : 4 ′ - tetramethyl- diphenylmethane , m . p . 122-123 ° ( Found ...
Page 1157
... reducing properties , and by Nessler's test ( Found : Cl , 66-3 . Calc . for NH , CI : Cl , 66 · 4 % ) . The aqueous solution remaining in the vessel was filtered and evaporated under reduced pressure at 80 ° , and the solid residue was ...
... reducing properties , and by Nessler's test ( Found : Cl , 66-3 . Calc . for NH , CI : Cl , 66 · 4 % ) . The aqueous solution remaining in the vessel was filtered and evaporated under reduced pressure at 80 ° , and the solid residue was ...
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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 bond bromine Calc carbon catalyst CH₂ Chem chloroform citrinin colourless needles compound condensation 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