Journal of the Chemical Society, Part 1Chemical Society., 1942 |
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Page 26
... distilled at normal pressure . To remove unchanged alcohol , the distillate ( 2 · 6 g . ) was warmed with phthalic anhydride ( 3 g . ) and pyridine ( 2 g . ) , and the hydrogen phthalic ester removed by extraction with sodium carbonate ...
... distilled at normal pressure . To remove unchanged alcohol , the distillate ( 2 · 6 g . ) was warmed with phthalic anhydride ( 3 g . ) and pyridine ( 2 g . ) , and the hydrogen phthalic ester removed by extraction with sodium carbonate ...
Page 138
... distillation fell to 15-20 % . Each time the pure hydroperoxide was distilled , a fresh small quantity of high - boiling residue was left ; furthermore , when the carefully fractionated hydroperoxide was irradiated for several hours in ...
... distillation fell to 15-20 % . Each time the pure hydroperoxide was distilled , a fresh small quantity of high - boiling residue was left ; furthermore , when the carefully fractionated hydroperoxide was irradiated for several hours in ...
Page 153
... distilled . The remaining oil distilled as m - tolylurethane ( 6 g . ) , a colourless liquid , b . p . 250-255 ° ( decomp . ) . Sodium hydroxide solution was added to the aqueous portion above ; the precipitated base was collected and ...
... distilled . The remaining oil distilled as m - tolylurethane ( 6 g . ) , a colourless liquid , b . p . 250-255 ° ( decomp . ) . Sodium hydroxide solution was added to the aqueous portion above ; the precipitated base was collected and ...
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Common terms and phrases
absorption acetone acidified alkaline aluminium amine ammonia anhydride aqueous atoms autoxidation base benzene boiling bromine Calc carbon carbonisation CH₂ Chem Chemical chloramine-T chloroform colour colourless needles compound concentrated condensation containing cooled copper crystallised from alcohol crystals decomp decomposition derivative dilute dissolved distilled double bond dried ester evaporated excess experimental extracted with ether filtered filtrate formation formed Found fraction gave glacial acetic acid H₂O heated hydrocarbon hydrochloric acid hydrogen chloride hydrolysis hydroperoxide hydroxyl ions isolated kations ketone light petroleum liquid melting method methyl alcohol methyl iodide micelles mixed m. p. mixture molecular molecule obtained oxidation oxidised oxygen peroxide potassium hydroxide precipitate prepared present prisms pyridine R₁ R₂ reaction refluxed requires residue salt separated sodium hydroxide solasodine solid soluble solvent substance sulphate sulphide sulphuric acid temperature thioindoxyl unsaturated washed water-bath yellow needles yield