Journal of the Chemical Society, Pages 1-1026The Society., 1950 |
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Page 299
... Crystals of the quinol- argon compound liberate large volumes of gas when covered with methanol which dissolves quinol , and , although a - quinol crystals sometimes give off a small amount of gas , there is no difficulty in ...
... Crystals of the quinol- argon compound liberate large volumes of gas when covered with methanol which dissolves quinol , and , although a - quinol crystals sometimes give off a small amount of gas , there is no difficulty in ...
Page 377
... crystals , m . p . ca. 260 ° ( decomp . ) ( ca. 10 % yield ) . The photodimer was heated under water - pump vacuum at 290 ° ( bath ) in a Pyrex test - tube for 1 hour . Oily drops of coumarin ( m . p . and mixed m . p . ) which ...
... crystals , m . p . ca. 260 ° ( decomp . ) ( ca. 10 % yield ) . The photodimer was heated under water - pump vacuum at 290 ° ( bath ) in a Pyrex test - tube for 1 hour . Oily drops of coumarin ( m . p . and mixed m . p . ) which ...
Page 378
... crystals formed on the upper parts of the reaction vessel were extracted several times with cold methyl alcohol ; uniform orange crystals melting at 195 ° were left and gave , with concentrated sulphuric acid , the olive - green colour ...
... crystals formed on the upper parts of the reaction vessel were extracted several times with cold methyl alcohol ; uniform orange crystals melting at 195 ° were left and gave , with concentrated sulphuric acid , the olive - green colour ...
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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 containing cooling copper corresponding crystallised crystals cyclisation decomp derivatives diazomethane dilute dioxan dissolved distilled disulphide dried electron ester ethanol ethyl acetate ethylamine evaporated 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 peroxide 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