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Page 246
... extracted three times with 10 % hydrochloric acid , and the acid solution added to the main aqueous layer . The united solutions were treated with excess of sodium bicarbonate and extracted twice with an equal volume of chloroform to ...
... extracted three times with 10 % hydrochloric acid , and the acid solution added to the main aqueous layer . The united solutions were treated with excess of sodium bicarbonate and extracted twice with an equal volume of chloroform to ...
Page 294
... extracted with ether , dried , and distilled , b . p . 179 ° ( phenylhydrazone , m . p . and mixed m . p . 153 ° ) ( 1.8 g . ) . The residual liquor after the extraction was evaporated to dryness on the water - bath ; formaldehyde was ...
... extracted with ether , dried , and distilled , b . p . 179 ° ( phenylhydrazone , m . p . and mixed m . p . 153 ° ) ( 1.8 g . ) . The residual liquor after the extraction was evaporated to dryness on the water - bath ; formaldehyde was ...
Page 798
... extracted with chloroform . Evaporation of solvent and distillation of the syrup yielded dimethyl y - xylonolactone , n19 1.462 ( 0-50 g . ) . Treatment with methyl - alcoholic ammonia gave 2 : 3 - dimethyl xylonamide ( 0.47 g . ) , m ...
... extracted with chloroform . Evaporation of solvent and distillation of the syrup yielded dimethyl y - xylonolactone , n19 1.462 ( 0-50 g . ) . Treatment with methyl - alcoholic ammonia gave 2 : 3 - dimethyl xylonamide ( 0.47 g . ) , m ...
Contents
The final crop was therefore the optically pure lselenonium dsulphonate m p 157159 with preliminary softening | 1 |
An Investigation of the Occurrence of the Coordinate or Dative Link by Electric Dipolemoment | 38 |
p 65100 decomp Crop I which was collected washed with methyl alcohol and dried Cautious | 43 |
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Common terms and phrases
4-benzthiazine absorption acetic anhydride acetone acetyl acetylene added addition aldehyde alkali Amer aqueous arsenic arsine arsonium atoms barium benzene boiling Calc carbinol carbon catalyst CH₂ Chem Chemical chloride chloroform CO₂H colourless compound condensation containing cooled crystallised crystals D.Sc decomp derivatives dilute dissolved distilled double bonds dried ester ethereal solution ethyl acetate ethylene evaporated experimental extracted filtered filtrate formation formed Found fraction furan gave give heated hydrocarbons hydrochloric acid hydrogen bromide hydrolysis iodide isolated ketone liquid methanol method methyl alcohol methyl ether mixed m. p. mixture molecule nickel nitrogen obtained optically oxide oxychloride phenylhydrazones phosphate phosphorus picrate potassium potassium hydroxide precipitate prepared presence prisms pyridine reaction reagent reduced refluxed requires residue ring room temperature salt separated sodium carbonate sodium hydroxide solid soluble solvent structure substance sulphate sulphuric acid tetrahydrofurfuryl umbellulone vacuum values washed yield zinc