Journal of the Chemical Society, Part 2Chemical Society., 1949 |
From inside the book
Results 1-3 of 76
Page 925
... precipitate began to appear . The passage of gas was continued for twice as long again before the precipitate was filtered off , washed with hot toluene , and thoroughly drained . A further small quantity of solid was obtained by ...
... precipitate began to appear . The passage of gas was continued for twice as long again before the precipitate was filtered off , washed with hot toluene , and thoroughly drained . A further small quantity of solid was obtained by ...
Page 1105
... precipitate was extracted with ether , and from the ethereal layer by shaking with aqueous potassium carbonate , followed by acidification , the carboxy - lactone ( XII ) was obtained in prisms ( chlorobenzene ) , m . p . 230-231 ...
... precipitate was extracted with ether , and from the ethereal layer by shaking with aqueous potassium carbonate , followed by acidification , the carboxy - lactone ( XII ) was obtained in prisms ( chlorobenzene ) , m . p . 230-231 ...
Page 1536
... precipitate separated from the cooled solution and was collected ( yield from the extraction , 5-10 % , i.e. , 0.1-0.3 % of the plant material taken ) . Boiling the precipitate with 90 % acetic acid gave a solution from which , on ...
... precipitate separated from the cooled solution and was collected ( yield from the extraction , 5-10 % , i.e. , 0.1-0.3 % of the plant material taken ) . Boiling the precipitate with 90 % acetic acid gave a solution from which , on ...
Other editions - View all
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 CHâ‚‚ 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