Journal of the Chemical SocietyThe Society., 1952 |
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Page 1251
... dissolved in concentrated sulphuric acid forming a reddish - brown solution ( maximum light absorption at 5250 Å ; E = 0.98 ) . It afforded a purple solution in alkaline dithionite . Action of Alkalis on 8 : 9 - Benzomesobenzanthrone ...
... dissolved in concentrated sulphuric acid forming a reddish - brown solution ( maximum light absorption at 5250 Å ; E = 0.98 ) . It afforded a purple solution in alkaline dithionite . Action of Alkalis on 8 : 9 - Benzomesobenzanthrone ...
Page 1273
... dissolving 35 g . of purest anydrous ceric sulphate in 25 ml . of 1 : 1 - sulphuric acid with warming and frequent additions of water until all the salt was dissolved . This solution was diluted to 1 1. with water , and its exact ...
... dissolving 35 g . of purest anydrous ceric sulphate in 25 ml . of 1 : 1 - sulphuric acid with warming and frequent additions of water until all the salt was dissolved . This solution was diluted to 1 1. with water , and its exact ...
Page 1641
... dissolved , and this was sublimed in vacuo . The purified dimethyl derivative ( XIII ) had m . p . 349 ° ( Found : N , 12.2 . Calc . for C ̧0H180 , N ̧ : N , 12.0 % ) . It dissolved in concentrated sulphuric acid with a reddish - orange ...
... dissolved , and this was sublimed in vacuo . The purified dimethyl derivative ( XIII ) had m . p . 349 ° ( Found : N , 12.2 . Calc . for C ̧0H180 , N ̧ : N , 12.0 % ) . It dissolved in concentrated sulphuric acid with a reddish - orange ...
Contents
244 | 1196 |
219 | 1216 |
The Polymerizability of Methyl atert Butylacrylate | 1220 |
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4-thionflavone 5-triazine absorption acetic anhydride acetone added alcohol alkaline Amer aqueous sodium atom benzene benzylamine boiling bromide Calc carbon CH₂ Chem chloride chloroform colour colourless compound concentrated sulphuric acid condensation cooled crystals D.Sc decomp decomposition derivatives dilute dioxide diphenyl dissolved distilled dried ester ethanol ether ethyl alcohol ethyl nitrate evaporated extracted filtered filtrate flavone fluorination formation formed Found fraction gave give m. p. heated under reflux hexamine hydrochloric acid hydrolysis hydroxyl insoluble iodide ionisation isolated ketone lactone light petroleum b. p. m. p. and mixed methiodide method methyl minutes mixed m. p. molecule needles niobium nitrate nitrobenzene obtained olefin oxidation picrate potassium hydroxide precipitate prepared prisms pyridine requires residue room temperature salt separated sodium hydroxide solid soluble solution solvent solvolysis sorbitol sulphate sulphuric acid tetrabenzyl pyrophosphate values washed yellow yield