Journal of the Chemical Society, Part 1Chemical Society., 1949 |
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Page 35
... acetone ( 5 c.c. ) , and the acetone extract again filtered and added to ice - cold water ( 167 c.c. ) . The base , precipitated in 62 % yield ( 1.76 g . ) , was extracted thrice with light petroleum ( b . p . 80-100 ° ; 100 c.c. , 2 x ...
... acetone ( 5 c.c. ) , and the acetone extract again filtered and added to ice - cold water ( 167 c.c. ) . The base , precipitated in 62 % yield ( 1.76 g . ) , was extracted thrice with light petroleum ( b . p . 80-100 ° ; 100 c.c. , 2 x ...
Page 191
... Acetone - Water . - The chloroethylamine ( 5 millimols . ) was dissolved in acetone ( 250 ml . ) , water ( 250 ml . ) was then added and the solution was rapidly heated to 37 ° and transferred to the thermostat . 50 Ml . of the solution ...
... Acetone - Water . - The chloroethylamine ( 5 millimols . ) was dissolved in acetone ( 250 ml . ) , water ( 250 ml . ) was then added and the solution was rapidly heated to 37 ° and transferred to the thermostat . 50 Ml . of the solution ...
Page 555
... acetone to remove gummy impurities . On crystallisation from methanol 4 ' - acetyldiphenyl - 2 - arsonic acid ... Acetone Acetone Compounds of Sugar Mercaptals : Diisopropylidene D - Xylose Diethylmercaptal . By O. T. DALLEY and R. J. ...
... acetone to remove gummy impurities . On crystallisation from methanol 4 ' - acetyldiphenyl - 2 - arsonic acid ... Acetone Acetone Compounds of Sugar Mercaptals : Diisopropylidene D - Xylose Diethylmercaptal . By O. T. DALLEY and R. J. ...
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Common terms and phrases
absorption acetic anhydride acetone added addition alkaline aluminium aluminium chloride Amer ammonia anhydride atom benzene boiling bond bromide Calc carbon catalyst CH₂ Chem chloroform colourless needles compound concentration condensation cooled crystallised crystals curve cyanide decomp decomposition derivatives dilute dissolved distilled disulphide dried ester ethyl acetate ethyl alcohol ethylene evaporated extracted with ether filtered filtrate formed Found fraction gave give m. p. heated hydrochloric acid hydrogen chloride hydrolysis iodide isolated ketone kojic acid light petroleum b. p. m. p. and mixed methanol method mixed m. p. mixture molecule obtained oxide phenyl picrate potassium hydroxide precipitated prepared prisms pyridine reaction reagent reduced pressure refluxed removed requires residue room temperature salt separated sodium hydroxide solid soluble solution solvent stirred structure sulphate sulphide sulphone sulphuric acid thionyl chloride washed yellow yield