Quarterly Journal of the Chemical Society of London, Volume 1, Pages 1-996 |
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Page 317
... chromatography ; iii , laevulic acid ( reflux ) ; iv , H - Pd , AcOHC - H2OAC Cro - Me , CO ; v , XH ,, HCI ... chromatography . After hydrolysis and oxidation 2,4 - dinitrophenylhydrazones were made which could be separated by ...
... chromatography ; iii , laevulic acid ( reflux ) ; iv , H - Pd , AcOHC - H2OAC Cro - Me , CO ; v , XH ,, HCI ... chromatography . After hydrolysis and oxidation 2,4 - dinitrophenylhydrazones were made which could be separated by ...
Page 364
... chromatography on columns ( b ) , ( c ) , ( e ) , and ( f ) ( see Table 2 ) . glucose , RG 0.94 . The mixture was separated by filter sheet chromatography in solvent ( E ) to give fractions la ( 35 mg . ) , 2,3,5 - tri - O - methyl - L ...
... chromatography on columns ( b ) , ( c ) , ( e ) , and ( f ) ( see Table 2 ) . glucose , RG 0.94 . The mixture was separated by filter sheet chromatography in solvent ( E ) to give fractions la ( 35 mg . ) , 2,3,5 - tri - O - methyl - L ...
Page 365
... chromatography of the derived methyl glycosides . Filter sheet chromatography in solvent ( F ) gave ( i ) 2,6 - di - O - methylgalactose ( 6 mg . ) which was identified by gas chromatography of the methyl glycosides on column ( ƒ ) and ...
... chromatography of the derived methyl glycosides . Filter sheet chromatography in solvent ( F ) gave ( i ) 2,6 - di - O - methylgalactose ( 6 mg . ) which was identified by gas chromatography of the methyl glycosides on column ( ƒ ) and ...
Contents
Organic chemistry | 1 |
oestrone | 10 |
Heterocyclic compounds from urea derivatives Part XVI Interaction of carbonohydrazide and carbodi | 19 |
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absorption acetic acid acetone added adduct alcohol alumina Amer aqueous aromatic band benzene boiled bromide Calc CH₂ chalcone Chem chim chloride chloroform chromatography cm.¹ colourless compound cooled crystallised cyclisation cyclohexane decomp derivatives diluted dimethyl dimethylformamide dioxan distilled doublet dried eluted ester ethanol ethyl acetate EtOH evaporated extracted with ether filtered filtrate Found fraction gave give heated under reflux hydrochloric acid hydrolysis i.r. spectrum identical irradiation isolated isomer ketone light petroleum b.p. lithium aluminium hydride mass spectra methylene mixed m.p. mixture mmoles mole n.m.r. spectrum needles nitrogen Nujol obtained olefin oxidation peak phosphine potassium prepared protons pyridine reaction reagent rearrangement reduced pressure reflux requires residue ring room temperature showed signals silica gel singlet sodium hydroxide solid solution solvent stirred structure synthesis Table tetrahydrofuran VIII yellow yield zygosporin