Quarterly Journal of the Chemical Society of London, Volume 1, Pages 1-1108 |
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Results 1-3 of 82
Page 152
... carbonyl functions , one aromatic proton ( 3.85 ) , and one hydrogen - bonded hydroxyl group ( −2 · 56 ) . The unsymmetrical angular pyronochro- manone ( IV ) had two additional peaks since each O Me Ac OH HO ( III ) O Me Ac OH ( IV ) ...
... carbonyl functions , one aromatic proton ( 3.85 ) , and one hydrogen - bonded hydroxyl group ( −2 · 56 ) . The unsymmetrical angular pyronochro- manone ( IV ) had two additional peaks since each O Me Ac OH HO ( III ) O Me Ac OH ( IV ) ...
Page 173
... carbonyl absorption in the i.r. region while acetyl- ation with acetic anhydride and pyridine gave an amorphous product recognised as a tetra - acetate from its n.m.r. spectrum . A second compound , m . p . 168 172 ° , had a single carbonyl ...
... carbonyl absorption in the i.r. region while acetyl- ation with acetic anhydride and pyridine gave an amorphous product recognised as a tetra - acetate from its n.m.r. spectrum . A second compound , m . p . 168 172 ° , had a single carbonyl ...
Page 1009
... carbonyl compounds by a reversible exchange of the organotin reagent . Acetyl chloride or methanol similarly react by displacing the carbonyl compound O = CR " R " " . If one or both of the groups R ' ' and R ' ' is a trihalogenomethyl ...
... carbonyl compounds by a reversible exchange of the organotin reagent . Acetyl chloride or methanol similarly react by displacing the carbonyl compound O = CR " R " " . If one or both of the groups R ' ' and R ' ' is a trihalogenomethyl ...
Contents
By A J HUBERT | 2 |
6Methoxy3methylbenzofurano47quinone dimers of 3methylbenzofurans and tautomerism in 2acetyl | 3 |
By R GARNER and H SUSCHITZKY | 74 |
Copyright | |
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absorption acetic acid acetic anhydride acetone acetyl adduct alcohol alumina Amer amine aromatic ation band benzene bromide Calc carbonyl CH₂ Chem chloride chloroform chromatography cm.¹ CO₂Me colourless compound cooled corresponding crystallised decomp derivatives diazomethane dilute dioxan dissolved distilled doublet dried elution ester ethanol ether ethyl acetate EtOH evaporated extracted with ether filtered filtrate Found fraction gave give heated under reflux hydrochloric acid hydrogenolysis hydrolysis hydroxyl infrared infrared spectrum isolated isomer ketone lactone light petroleum b. p. lithium aluminium hydride log ɛ methyl angolensate methyl ester methylene mixed m. p. mmoles mole multiplet n.m.r. spectrum needles Nujol obtained oxetan oxidation peaks phenyl potassium prepared protons pyridine reaction mixture reduction requires residue ring room temperature singlet sodium hydroxide solid solution solvent spectra spectrum showed stirred structure sulphuric acid ultraviolet VIII washed yellow yield