Journal of the Chemical SocietyThe Society., 1955 |
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Page 1173
... chloroform - methanol as plates , m . p . and mixed m . p . 217-218 ° , [ a ] + 25 ° ( c , 1 · 3 ) ( Found : C , 58-75 ; H , 7 · 5 % ) ( absorption : as before ) . = 11 - Oxo - 9ẞ - ergosta - 8 ( 14 ) : 15 : 22 - trien - 33 - yl Acetate ...
... chloroform - methanol as plates , m . p . and mixed m . p . 217-218 ° , [ a ] + 25 ° ( c , 1 · 3 ) ( Found : C , 58-75 ; H , 7 · 5 % ) ( absorption : as before ) . = 11 - Oxo - 9ẞ - ergosta - 8 ( 14 ) : 15 : 22 - trien - 33 - yl Acetate ...
Page 1244
... chloroform was extremely sensitive to the presence of traces of ethanol , e.g. , a crop with [ x ] 5461 -29.1 ° in " B.P. " chloroform had [ x ] 5461 + 10.0 ° in chloroform which had been freed from ethanol ; ( b ) both salts were ...
... chloroform was extremely sensitive to the presence of traces of ethanol , e.g. , a crop with [ x ] 5461 -29.1 ° in " B.P. " chloroform had [ x ] 5461 + 10.0 ° in chloroform which had been freed from ethanol ; ( b ) both salts were ...
Page 1509
... chloroform ( 20 ml . ) was treated with hydrazoic acid in the same solvent ( 24 ml . of 3.07 % w / v ) and the mixture was added dropwise with stirring during 30 min . to concentrated sulphuric acid ( 10 ml . ) and chloroform ( 20 ml ...
... chloroform ( 20 ml . ) was treated with hydrazoic acid in the same solvent ( 24 ml . of 3.07 % w / v ) and the mixture was added dropwise with stirring during 30 min . to concentrated sulphuric acid ( 10 ml . ) and chloroform ( 20 ml ...
Contents
By F SMITH and LILIAN M TURTON | 1045 |
The Constitution of Homolycorine and Lycorenine | 1066 |
The Photolysis of Acetaldehyde Part III The Reaction in the Presence of Nitric | 1076 |
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acetic anhydride acetone acetyl acidified added alcohol alkali Amer ammonia aqueous sodium aqueous solution atom benzene boiling bromine Calc carbon Chem chloride chloroform chromatography colourless compound concentrated cooled crystallised from methanol decomp derivative dilute dimethyl dioxan dissolved distillation dried eluted ester ethanol evaporated EXPERIMENTAL filtered filtrate formed Found fraction gave give glacial acetic acid H₂O heated hydrochloric acid hydrogen chloride hydrolysis iodide isolated ketone light petroleum b. p. lithium aluminium hydride m. p. and mixed method methyl mixed m. p. mixture molecule naphthazarin nitric oxide nitrogen obtained oxide pale yellow picrylsulphonate potassium hydroxide precipitate prepared prisms pyridine reaction reduced pressure refluxed removed Reprint Order requires residue ring room temperature salt separated sodium hydroxide solid soluble solvent steam-bath stirred structure sulphide sulphone sulphuric acid titration values vouacapenate washed yellow needles yield