Journal of the Chemical SocietyThe Society., 1964 |
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Results 1-3 of 72
Page 3713
... heated during 45 min . on the water - bath . 4,6 - Diacetyl - 3,4 - dihydro - 7 - hydroxy - 3 - methyl - 2H - 1,4 - benzoxazine ( 0.5 g . ) was obtained and crystallised from light petroleum as rhombs , m . p . 117 ° ( Found : N , 5.6 ...
... heated during 45 min . on the water - bath . 4,6 - Diacetyl - 3,4 - dihydro - 7 - hydroxy - 3 - methyl - 2H - 1,4 - benzoxazine ( 0.5 g . ) was obtained and crystallised from light petroleum as rhombs , m . p . 117 ° ( Found : N , 5.6 ...
Page 4268
... heated with an excess of polyphosphoric acid 38 and sodium azide ( 6 mg . ) at 110-114 ° in a high vacuum for 4 hr . in equipment which allowed the generated carbon dioxide ( 32 % ) to be trapped and measured manometrically . The gas ...
... heated with an excess of polyphosphoric acid 38 and sodium azide ( 6 mg . ) at 110-114 ° in a high vacuum for 4 hr . in equipment which allowed the generated carbon dioxide ( 32 % ) to be trapped and measured manometrically . The gas ...
Page 4312
... heated under reflux for 20 hr . Methanol ( 11. ) was distilled off , the residue added to ice - water ( 3 1. ) , the precipitate collected , dissolved in sodium hydrogen carbonate solution ( 5 % ) , and the solution filtered and ...
... heated under reflux for 20 hr . Methanol ( 11. ) was distilled off , the residue added to ice - water ( 3 1. ) , the precipitate collected , dissolved in sodium hydrogen carbonate solution ( 5 % ) , and the solution filtered and ...
Contents
4028 | 3507 |
Nucleophilic reactivity Part V The reaction between amines and ethyl meth | 3513 |
Molecular polarisability Dipole moments molar Kerr constants and apparent | 3523 |
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absorption acetic acid acetic anhydride acetone acetoxylation acetyl added alcohol alkaline alumina aluminium Amer amine atoms band benzene benzyl bond bromide Calc carbon carbonyl CH₂ chabazite Chem chloride chloroform chromatography cm.¹ compounds concentration crystals decomp derivatives diethyl diluted dimethylformamide diol dissolved distilled dried ester ethanol ethyl acetate evaporated EXPERIMENTAL extracted with ether filtrate formation Found fraction gave give heated hydrochloric acid hydrochloride hydrogen hydrolysis hydroxyl infrared iodide isomers K₁ ketone kinetic light petroleum lithium lithium aluminium hydride m. p. and mixed mixed m. p. mixture mole molecules needles nitrate nitric acid nitrogen o-xylene obtained optical oxide oxygen petroleum b. p. phenol picrate potassium precipitated prepared proton pyridine rate constants reaction recrystallised refluxed requires residue room temperature salt sodium hydroxide solvent spectra spectrum stirred structure substitution sulphuric acid Table values washed yield