Journal of the Chemical SocietyThe Society., 1960 |
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Page 65
... distilled off and the residue was directly hydrolysed and esterified as above , thereby improving the yield slightly . Ethylene Ketal of the Ester ( VI ) .— The ester ( VI ) ( 20 g . ) , freshly distilled ethylene glycol ( 6 c.c. ) ...
... distilled off and the residue was directly hydrolysed and esterified as above , thereby improving the yield slightly . Ethylene Ketal of the Ester ( VI ) .— The ester ( VI ) ( 20 g . ) , freshly distilled ethylene glycol ( 6 c.c. ) ...
Page 371
... distilled several times in vacuo in an all - glass apparatus with no taps or joints and without access of air ; head and tail fractions were rejected . Silicon tetrachloride of technical quality was fractionally distilled and then ...
... distilled several times in vacuo in an all - glass apparatus with no taps or joints and without access of air ; head and tail fractions were rejected . Silicon tetrachloride of technical quality was fractionally distilled and then ...
Page 1256
... distilled through a column ( 115 × 2 cm . ) packed with " glass rings . All other fractional distillations referred to were carried out with a spinning - band column which had an efficiency of thirty - five theoretical plates at ...
... distilled through a column ( 115 × 2 cm . ) packed with " glass rings . All other fractional distillations referred to were carried out with a spinning - band column which had an efficiency of thirty - five theoretical plates at ...
Contents
NO PAGE | 6 |
Tautomerism of Nheteroaromatic aldoximes | 22 |
Nucleophilic displacements in organic sulphites Part VI Comparison of | 37 |
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acetic acid alcohol alkaline Amax Amer amylose anhydride aniline aqueous sodium ation atom bands benzene benzoic acid benzoyl peroxide boiled bond boron bromide butyl Calc calculated carbon tetrachloride CH₂ Chem chloride chlorobenzene chloroform chromatography complex component compounds concentration constants cooled crystallised cyclic sulphate cyclohexane decomposition derivatives dilute distilled dried equation ester ethanol ether ethyl acetate evaporated EXPERIMENTAL extracted Fèvre filtered filtrate formed Found fraction gave H₂O heated hydrochloride hydrogen hydrogen chloride hydrolysis imino-ether infrared iodide ions isolated k₁ ketone m. p. and mixed method mixed m. p. mixture mole molecular molecules needles NH₂ nitration nitrogen obtained oxide peroxide phenol picrate potassium precipitate prepared pyridine reaction reduced reflux removed requires residue room temperature sample sodium hydroxide solution solvent spectra spectrum Table thiocyanate thiocyanogen transition values vanadium(IV wavelengths yield Z-enzyme