Journal of the Chemical Society, Part 1The Society., 1947 |
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Page 25
... distilled . Diethyl - p- toluidine was fractionally distilled four times , and nicotine twice under reduced pressure . Diethylaniline was fractionally frozen ( m . p . 34.5 ° ) and then twice redistilled . Benzyldiethylamine was ...
... distilled . Diethyl - p- toluidine was fractionally distilled four times , and nicotine twice under reduced pressure . Diethylaniline was fractionally frozen ( m . p . 34.5 ° ) and then twice redistilled . Benzyldiethylamine was ...
Page 48
... distillation , the residue was distilled at 5 × 10-4 mm . ( bath temp . 170-175 ° ) . The distillate , a pale yellow , viscous oil , contained sulphur . On heating at 100 ° / 10-4 mm . for several hours , some unchanged methylthio ...
... distillation , the residue was distilled at 5 × 10-4 mm . ( bath temp . 170-175 ° ) . The distillate , a pale yellow , viscous oil , contained sulphur . On heating at 100 ° / 10-4 mm . for several hours , some unchanged methylthio ...
Page 376
... distilled with potassium hydroxide solution ( 50 % ; 30 c.c. ) and the oily distillate collected , dried ( KOH ) , and distilled to give 2 : 5 - di - sec . - butylpyrazine as a light yellow coloured oil , b . p . 113 ° / 11 mm . ( yield ...
... distilled with potassium hydroxide solution ( 50 % ; 30 c.c. ) and the oily distillate collected , dried ( KOH ) , and distilled to give 2 : 5 - di - sec . - butylpyrazine as a light yellow coloured oil , b . p . 113 ° / 11 mm . ( yield ...
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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 cooled crystallised crystallised from alcohol crystals cyanide D.Sc decomp derivative diazotised dilute dissolved distilled dried ester 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 sodium nitrite solid soluble solvent stirred structure substance sulphate sulphide sulphone sulphuric acid washed yellow needles yield