Journal of the Chemical Society, Part 2Chemical Society., 1949 |
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Page 906
... filtrate until the solution was alkaline to phenol- phthalein . The precipitate of barium phosphate and barium sulphate was collected by centrifugation and washed 6 times by resuspension in boiling water ( 2 1. each ) and centrifugation ...
... filtrate until the solution was alkaline to phenol- phthalein . The precipitate of barium phosphate and barium sulphate was collected by centrifugation and washed 6 times by resuspension in boiling water ( 2 1. each ) and centrifugation ...
Page 919
... filtrate was added , slowly , a solution of sodium ( 4-6 g . , 0.2 mol . ) in ethyl alcohol ( 80 c.c. ) , and the whole added to a solution of 1 - bromo - 2 - fluoroethane ( 25-4 g . , 0-2 mol ) in ethyl alcohol ( 30 c.c. ) . The ...
... filtrate was added , slowly , a solution of sodium ( 4-6 g . , 0.2 mol . ) in ethyl alcohol ( 80 c.c. ) , and the whole added to a solution of 1 - bromo - 2 - fluoroethane ( 25-4 g . , 0-2 mol ) in ethyl alcohol ( 30 c.c. ) . The ...
Page 1363
... filtrate , and the barium carbonate precipitated was filtered off . The filtrate was evaporated to dryness and yielded a pale yellow syrup which set to a glass ( 0.2 g . ) ; [ a ] 18 ° -17.6 ° ( equilibrium in 72 hours ) ( c , 1.45 in ...
... filtrate , and the barium carbonate precipitated was filtered off . The filtrate was evaporated to dryness and yielded a pale yellow syrup which set to a glass ( 0.2 g . ) ; [ a ] 18 ° -17.6 ° ( equilibrium in 72 hours ) ( c , 1.45 in ...
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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