Quarterly Journal of the Chemical Society of London, Volume 21 |
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Page 3753
... extracted with ether ( 3 × 200 c.c. ) , and the combined extracts were washed with water ( 3 × 200 c.c. ) and then with aqueous 5 % sodium carbonate ( 4 × 100 c.c. ) . The latter washings were combined , acidified with concen- trated ...
... extracted with ether ( 3 × 200 c.c. ) , and the combined extracts were washed with water ( 3 × 200 c.c. ) and then with aqueous 5 % sodium carbonate ( 4 × 100 c.c. ) . The latter washings were combined , acidified with concen- trated ...
Page 3998
... extracted with ether ( 2 × 100 ml ) . The ether layer was washed , separated , dried ( Na2SO1 ) , and evaporated to give a yellow solid ( 0.5 g ) which after crystallisation from ethanol gave bright yellow crystals ( 0.4 g , 68 ...
... extracted with ether ( 2 × 100 ml ) . The ether layer was washed , separated , dried ( Na2SO1 ) , and evaporated to give a yellow solid ( 0.5 g ) which after crystallisation from ethanol gave bright yellow crystals ( 0.4 g , 68 ...
Page 3999
... extracted with ether ( 2 × 250 ml ) . The ether layer was washed , separated , dried ( Na , SO ) , and evaporated to give a yellow solid ( 0 · 7 g , 67 % ) which after crystallisation from hexane gave bright yellow crystals , m.p. 157 ...
... extracted with ether ( 2 × 250 ml ) . The ether layer was washed , separated , dried ( Na , SO ) , and evaporated to give a yellow solid ( 0 · 7 g , 67 % ) which after crystallisation from hexane gave bright yellow crystals , m.p. 157 ...
Contents
Organic chemistry | 3513 |
Partially fluorinated heterocyclic compounds Part IX The syntheses of 4567tetrafluorobenzobfuran | 3516 |
Reactions of cyclohexadienes Part XII Some dienamines and dimethyl acetylenedicarboxylate | 3517 |
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acetic acid acetic anhydride acetone alkyl Amer amine aqueous ethanol aromatic atom benzene benzene-light petroleum benzyl boiling boron tribromide bromide Calc carbonyl CH₂ CHCl3 Chem chloroform chromatography cm¯¹ cm¹ CO₂H compound condensation cooled crystallised decomp derivatives diazomethane dimer dimethyl dimethylformamide dioxan dried elution enol ergochrysin ester ethanol ether ethyl acetate EtOH evaporated extracted filtered Found gave give heated hydrogen chloride i.r. spectrum identical isolated isomers ketone log ɛ mass spectra methyl methylene mixed m.p. mixture myricanone n.m.r. spectrum nitrogen Nujol obtained olefinic oxidation petroleum Ph Ph Ph PhCH₂ phenolic potassium prepared prisms protons pyridine quinuclidine reaction refluxed requires residue ring room temperature S)-sulphoxide sclerotiorin signals singlet sodium hydrogen carbonate sodium hydroxide solid solution solvent stirred structure sulphoxide synthesis triethylamine vacuo W. B. Whalley washed yellow needles yield