Journal of the Chemical Society, Part 1Chemical Society., 1949 |
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Results 1-3 of 87
Page 302
... evaporated to dryness under reduced pressure . The residue was extracted with ether , and the extract evaporated to give phenylacetic acid ( 0-11 g . ) , m . p . and mixed m . p . 74 ° . The acid was characterised by conversion into its ...
... evaporated to dryness under reduced pressure . The residue was extracted with ether , and the extract evaporated to give phenylacetic acid ( 0-11 g . ) , m . p . and mixed m . p . 74 ° . The acid was characterised by conversion into its ...
Page 478
... evaporated to dryness , and the residue extracted with 2N - hydrochloric acid . The filtered extract was then added to excess of ice - cold 5N - sodium hydroxide , and the precipitated base isolated by extraction with benzene and ...
... evaporated to dryness , and the residue extracted with 2N - hydrochloric acid . The filtered extract was then added to excess of ice - cold 5N - sodium hydroxide , and the precipitated base isolated by extraction with benzene and ...
Page 487
... evaporated under reduced pressure at 40 ° , and the residue extracted with boiling absolute alcohol to leave barium isatinecate . The alcoholic filtrates , evaporated under reduced pressure , gave an almost quantitative yield of ...
... evaporated under reduced pressure at 40 ° , and the residue extracted with boiling absolute alcohol to leave barium isatinecate . The alcoholic filtrates , evaporated under reduced pressure , gave an almost quantitative yield of ...
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Common terms and phrases
absorption acetic anhydride acetone added addition alkaline aluminium aluminium chloride Amer ammonia anhydride atom benzene boiling bond bromide Calc carbon catalyst CH₂ Chem chloroform colourless needles compound concentration condensation cooled crystallised crystals curve cyanide decomp decomposition derivatives dilute dissolved distilled disulphide dried ester ethyl acetate ethyl alcohol ethylene evaporated extracted with ether filtered filtrate formed Found fraction gave give m. p. heated hydrochloric acid hydrogen chloride hydrolysis iodide isolated ketone kojic acid light petroleum b. p. m. p. and mixed methanol method mixed m. p. mixture molecule obtained oxide phenyl picrate potassium hydroxide precipitated prepared prisms pyridine reaction reagent reduced pressure refluxed removed requires residue room temperature salt separated sodium hydroxide solid soluble solution solvent stirred structure sulphate sulphide sulphone sulphuric acid thionyl chloride washed yellow yield