Journal of the Chemical Society, Part 4The Society., 1949 |
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Results 1-3 of 71
Page 2733
... nitrogen content , 4.9 % , is equivalent to 29.9 % of amide units . The content of acid units was found by titration to be 67.8 % . The content of phenyl and benzoate end groups , is , by difference , 2.3 % . This value has been applied ...
... nitrogen content , 4.9 % , is equivalent to 29.9 % of amide units . The content of acid units was found by titration to be 67.8 % . The content of phenyl and benzoate end groups , is , by difference , 2.3 % . This value has been applied ...
Page 2863
... Nitrogen supply D FIG . 1 . thy C B A pressure of dry nitrogen and the open end of A was closed . The contents of A were then distilled slowly in vacuum through B ( at -120 ° ) into D , which was cooled in liquid nitrogen . Chlorine ...
... Nitrogen supply D FIG . 1 . thy C B A pressure of dry nitrogen and the open end of A was closed . The contents of A were then distilled slowly in vacuum through B ( at -120 ° ) into D , which was cooled in liquid nitrogen . Chlorine ...
Page 3252
... nitrogen , the reaction vessel was evacuated again , and the admission of nitrogen and evacuation were repeated 3 times . At first we carried out our experiments in an atmosphere of nitrogen . This did not influence the yield of phenol ...
... nitrogen , the reaction vessel was evacuated again , and the admission of nitrogen and evacuation were repeated 3 times . At first we carried out our experiments in an atmosphere of nitrogen . This did not influence the yield of phenol ...
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Common terms and phrases
absorption acetic acid acetic anhydride acetone added alcohol alkaline aluminium chloride aluminium iodide Amer amine ammonia aqueous sodium atom benzaldehyde benzene boiling bond bromide bromine trifluoride Calc carbon CH₂ Chem chloroform colourless needles compound concentrated condensation containing cooled crystallised crystals D.Sc decomp decomposition derivatives diazotised dilute dioxan dissolved distilled dried ester ethanol ethyl alcohol extracted with ether filtered filtrate formation formed Found fraction gave Grignard reagent halide heated under reflux hydrochloric acid hydrogen chloride hydrolysis iodide iodine ions isolated ketone light petroleum b. p. liquid method methyl methyl iodide minutes mixture molecule nitrate nitrogen obtained oxidation phenol picrate potassium precipitate prepared prisms pyridine reaction reagent recrystallised from ethanol reduced pressure removed requires residue room temperature salt separated sodium hydroxide solid soluble solution solvent sulphate sulphone sulphuric acid synthesis Table tube values washed yield