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Page 1573
... evaporated to a syrup ( 2.5 g . ) which on distillation gave the ring scission product ( C ) as a colourless , highly viscous syrup ( 1.5 g . , 63 % ) , b . p . ( bath temp . ) 132-138 ° / 0.04 mm . , n 1.5161 , believed to be 5 ...
... evaporated to a syrup ( 2.5 g . ) which on distillation gave the ring scission product ( C ) as a colourless , highly viscous syrup ( 1.5 g . , 63 % ) , b . p . ( bath temp . ) 132-138 ° / 0.04 mm . , n 1.5161 , believed to be 5 ...
Page 1574
... evaporated ; the residual syrup weighed only 11 mg . The aqueous residues was therefore neutralised with sodium carbonate and evaporated to dryness under reduced pressure ; the solid residue was extracted several times with ether under ...
... evaporated ; the residual syrup weighed only 11 mg . The aqueous residues was therefore neutralised with sodium carbonate and evaporated to dryness under reduced pressure ; the solid residue was extracted several times with ether under ...
Page 1901
... evaporated to 100 c.c. Attempts to obtain crystalline material from the solution failed . The solution was treated with diazomethane ( 1.5 g . ) in ether ( 50 c.c. ) . After 0.5 hour the solution was evaporated , to give a clear yellow ...
... evaporated to 100 c.c. Attempts to obtain crystalline material from the solution failed . The solution was treated with diazomethane ( 1.5 g . ) in ether ( 50 c.c. ) . After 0.5 hour the solution was evaporated , to give a clear yellow ...
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Common terms and phrases
absorption acetic anhydride acetone acetyl added alcohol alkaline alunite Amer amine ammonia anhydrous anilide aqueous sodium atom benzene boiling bromine trifluoride Calc carbonate CH₂ Chem chloroform colour colourless needles compound condensation containing cooled crystallised crystals cyanide cyclisation D.Sc decomp derivatives dilute dissolved distilled dried equiv ester ethanol ethyl acetate evaporated EXPERIMENTAL extracted with ether filtered filtrate fluoride formation formed Found fraction gave give heated under reflux hydrochloric acid hydrogen chloride hydrolysis iodide iodine ions isolated kcals ketone light petroleum b. p. liquid melting method methyl minutes mixed m. p. molecule nitrate nitrile nitrogen obtained oxalate oxide oxime oxygen pickeringite picrate piperidine potassium potassium hydroxide precipitate prepared prisms pyridine reductive dissolution removed requires residue room temperature salt semicarbazone separated sodium hydroxide solid soluble solvent specimen sulphate sulphuric acid values washed xylose yellow needles yield