Quarterly Journal of the Chemical Society of London, Volume 16, Pages 2739-3518 |
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Page 3234
... dissolved in 95 % formic acid ( 100 ml ) at 20 ° and , after 30 min , the solution was concentrated under reduced pressure . The residue was dissolved in chloroform and applied to a column of silicic acid ( 250 g ) . The column was ...
... dissolved in 95 % formic acid ( 100 ml ) at 20 ° and , after 30 min , the solution was concentrated under reduced pressure . The residue was dissolved in chloroform and applied to a column of silicic acid ( 250 g ) . The column was ...
Page 3235
... dissolved in chloroform ; the solution was washed with aqueous sodium hydrogen carbonate , dried ( MgSO ) , evaporated , and the residue was dissolved in 98 % formic acid ( 5 ml ) . The solution was set aside at 20 ° for 5 min . The ...
... dissolved in chloroform ; the solution was washed with aqueous sodium hydrogen carbonate , dried ( MgSO ) , evaporated , and the residue was dissolved in 98 % formic acid ( 5 ml ) . The solution was set aside at 20 ° for 5 min . The ...
Page 3236
... dissolved in 90 % formic acid and set aside at 20 ° for 24 h before it was evaporated . The residue was dissolved in chloroform and applied to a column of SilicAR CC7 ( 15 g ) . The column was washed with chloroform and then eluted with ...
... dissolved in 90 % formic acid and set aside at 20 ° for 24 h before it was evaporated . The residue was dissolved in chloroform and applied to a column of SilicAR CC7 ( 15 g ) . The column was washed with chloroform and then eluted with ...
Contents
Organic chemistry | 2739 |
Cyclic quaternary ammonium salts Part VIII Imidazo12apyrazinium salts | 2748 |
Reactions of pyridine Noxides with 36dichloropyridazine | 2756 |
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2-pyridyl acetic acid acetic anhydride acetone acetonitrile added adduct Amer amine anhydride aqueous aromatic azide benzene benzyl bromide Calc carbon CH₂ Chem Chemical chloride chloroform chromatographed cm¯¹ cm¹ CO₂H compound crystallised cyclisation decomp derivative dimethyl dimethylformamide distilled doublet dried elution ester ethanol ether ethyl acetate EtOH evaporated extracted filtered filtrate Found fraction gave give heated under reflux hydrazone hydride hydrochloric hydrogen hydrolysis hydroxide i.r. spectrum isolated ketone light petroleum lithium aluminium hydride mass spectra methyl methylene mixed m.p. mixture mmHg mmol mmoles N-oxide n.m.r. spectra needles nitrogen obtained oxidation petroleum b.p. Ph Ph phenol phosphite potassium prepared protons pyridine reaction reagent rearrangement requires residue ring room temperature signals silica gel sodium sodium hydroxide solid solution solvent stirred structure synthesis Tetrahedron triethyl phosphite washed yield