Quarterly Journal of the Chemical Society of London |
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Page 57
... fraction on redistillation had b . p . 120-150 ° / 756 mm . and contained about 5 % [ i.e. , 0 · 3 % on original fraction ( 2 ) ] of cyclopentanone , identified and estimated as dinitrophenylhydrazone . IV . Detection of ...
... fraction on redistillation had b . p . 120-150 ° / 756 mm . and contained about 5 % [ i.e. , 0 · 3 % on original fraction ( 2 ) ] of cyclopentanone , identified and estimated as dinitrophenylhydrazone . IV . Detection of ...
Page 745
... fraction was still incomplete . 2 : 35 - Trimethyl Methylgalactofururonoside ( X ) .- Fractions ( i ) , ( ii ) , and ( iii ) were combined and methylated twice with methyl iodide and distilled , giving fraction ( a ) ( C - 5 g . ) , b ...
... fraction was still incomplete . 2 : 35 - Trimethyl Methylgalactofururonoside ( X ) .- Fractions ( i ) , ( ii ) , and ( iii ) were combined and methylated twice with methyl iodide and distilled , giving fraction ( a ) ( C - 5 g . ) , b ...
Page 750
... fractions A1 , Á2 , and A ̧ were precipitated from the solution by graded addition of ligroin . The supernatant liquid was decanted from each fraction precipitated and the latter was washed by decantation with a mixture of ether and ...
... fractions A1 , Á2 , and A ̧ were precipitated from the solution by graded addition of ligroin . The supernatant liquid was decanted from each fraction precipitated and the latter was washed by decantation with a mixture of ether and ...
Contents
An Investigation of the Occurrence of the Coordinate or Dative Link by Electric Dipolemoment | 38 |
Electrolytic Dissociation Processes Part IV The Ionisation of a CarbonHalogen Bond | 129 |
By J SHERIDAN | 133 |
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4-benzthiazine absorption acetic anhydride acetone acetyl acetylene added addition adsorbed alkali Amer ammonia aqueous atoms benzene boiling bond Calc carbinol carbon catalyst CH₂ Chem chloroform colourless needles compound concentrated condensation cooling crystallised from alcohol crystals cyclisation D.Sc decomp derivative described dilute dissolved distilled dried ester ethanol ether ethylene evaporated EXPERIMENTAL extracted filtered filtrate formation formed Found fraction gave give heated hydrocarbons hydrochloric acid hydrogen bromide hydrogen chloride hydrolysis iodide isolated ketone light petroleum liquid methiodide method methyl alcohol mixed m. p. mixture molecule nickel nitric nitrogen obtained optically oxide oxychloride phosphate phosphorus picrate potassium potassium hydroxide precipitate prepared pressure prisms pyridine reaction reduced refluxed requires residue ring room temperature salt saturated separated sodium carbonate sodium hydroxide solid soluble solution solvent structure substance sulphate sulphuric acid vacuum washed yellow needles yield zinc