Journal of the Chemical SocietyThe Society., 1950 |
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Page 500
... solvent . The compounds so obtained have a sufficiently high rotation to allow observations to be made of their rates of racemisation in an inactive solvent and to compare the effect of substituents on the optical stability of closely ...
... solvent . The compounds so obtained have a sufficiently high rotation to allow observations to be made of their rates of racemisation in an inactive solvent and to compare the effect of substituents on the optical stability of closely ...
Page 524
... solvent front vary considerably with small changes . Mercury was extracted in a very narrow band in the solvent front by the following method . The test solution , which should not contain more than 5 % ( v / v ) of hydrochloric acid ...
... solvent front vary considerably with small changes . Mercury was extracted in a very narrow band in the solvent front by the following method . The test solution , which should not contain more than 5 % ( v / v ) of hydrochloric acid ...
Page 525
... solvent front . ( 1 ) Separation of F , Cl , Br , and I. ( With D. B. REES EVANS . ) — Recommended method . The acid radicals are present as their sodium salts and the solvent used is pyridine containing 10 % ( v / v ) of water . The ...
... solvent front . ( 1 ) Separation of F , Cl , Br , and I. ( With D. B. REES EVANS . ) — Recommended method . The acid radicals are present as their sodium salts and the solvent used is pyridine containing 10 % ( v / v ) of water . The ...
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Common terms and phrases
4-dione absorption acetic acid acetic anhydride acetone acetyl activity added alcohol alkaline Amer amine ammonia amylose anhydride atom benzene boiling bromide bromine trifluoride Calc carbon dioxide carbon tetrachloride catalyst CH₂ Chem chloride chloroform CO₂ colour colourless complex compound cooling corresponding crystallised crystals cyclisation D.Sc decomp derivatives diazomethane dilute dioxan dissolved distilled disulphide dried electron ester ethanol ether ethyl acetate ethylamine evaporated extracted filtered filtrate formed Found fraction gave give heated under reflux hydrochloric acid hydrogen chloride hydrolysis iodide isolated ketone light petroleum b. p. liquid m. p. and mixed metals method methyl minutes mixed m. p. mixture molecule needles nitrate obtained oxidation potassium precipitate prepared prisms pyridine Q-enzyme reaction reagent reduced requires residue room temperature salt separated sodium hydroxide solid soluble solution solvent sulphate sulphide sulphuric acid washed yellow yield