Journal of the Chemical Society, Part 1The Society., 1947 |
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Page 21
... hydrochloric acid , followed by evaporation and recrystallisation from alcohol - water , m . p . 208 ° ( decomp . ) ; [ a ] 17 + 88-2 ° in water ( c , 1 · 15 ) ( Found : Cl , 15.4 . C , H15O , N , HCl requires Cl , 15 · 5 % ) . The ...
... hydrochloric acid , followed by evaporation and recrystallisation from alcohol - water , m . p . 208 ° ( decomp . ) ; [ a ] 17 + 88-2 ° in water ( c , 1 · 15 ) ( Found : Cl , 15.4 . C , H15O , N , HCl requires Cl , 15 · 5 % ) . The ...
Page 391
... hydrochloric acid . The amidine was reprecipitated , washed with ice - water and dissolved in an equivalent of hydrochloric acid . The amidinium chlorides were isolated by concentrating the solutions by distillation under diminished ...
... hydrochloric acid . The amidine was reprecipitated , washed with ice - water and dissolved in an equivalent of hydrochloric acid . The amidinium chlorides were isolated by concentrating the solutions by distillation under diminished ...
Page 609
... acid . For instance , prolonged heating with 0.5N - nitric acid gave the scarlet isomeride exclusively in 10 % yield ... hydrochloric acid was added to the hot filtrate with thorough stirring until a faint permanent precipitate was ...
... acid . For instance , prolonged heating with 0.5N - nitric acid gave the scarlet isomeride exclusively in 10 % yield ... hydrochloric acid was added to the hot filtrate with thorough stirring until a faint permanent precipitate was ...
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Common terms and phrases
acetic anhydride acetone acetyl added alkaline Amer amidine amine ammonia ammonium aqueous sodium atoms benzene boiling bromide Calc CH₂ charcoal Chem chloroform colourless needles compound concentrated hydrochloric acid condensation cooled crystallised crystallised from alcohol crystals cyanide decomp derivative diazotised dilute dissolved distilled dried ester ethyl acetate experimental extracted with ether filtered filtrate formed Found fraction gave give m. p. H₂O heated hydrochloric acid hydrogen chloride hydrolysis iodide isolated light petroleum m. p. and mixed methanol Methiodide method methyl alcohol minutes mixed m. p. molecular molecule nitration nitric acid obtained oxidation pale yellow petroleum b. p. phenyl picrate polymer polymerisation potassium precipitate prepared prisms pyridine reduced pressure refluxed removed requires residue room temperature salt separated sodium carbonate sodium hydroxide solid soluble solvent stirred structure substance sulphate sulphide sulphone sulphuric acid washed yellow needles yield