Quarterly Journal of the Chemical Society of London, Volume 1, Pages 1-996 |
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Page 279
... solution was heated under reflux for 5 hr . It was then cooled , filtered , acidified ( concentrated hydro- chloric acid ) , and extracted with ethyl acetate ( 4 × 1 1. ) . The organic solution was washed ( 10 % brine ) , dried ( MgSO4 ) ...
... solution was heated under reflux for 5 hr . It was then cooled , filtered , acidified ( concentrated hydro- chloric acid ) , and extracted with ethyl acetate ( 4 × 1 1. ) . The organic solution was washed ( 10 % brine ) , dried ( MgSO4 ) ...
Page 280
... solution was cooled to 10 ° . A cooled solution of 45 % hydrogen bromide in acetic acid was then added and the mixture was shaken at this temperature for 5 min . Cold ethyl acetate ( 100 ml ) was added and the resulting solution was ...
... solution was cooled to 10 ° . A cooled solution of 45 % hydrogen bromide in acetic acid was then added and the mixture was shaken at this temperature for 5 min . Cold ethyl acetate ( 100 ml ) was added and the resulting solution was ...
Page 493
... solution gave unchanged diboronic acid ( 0.58 g . , 60.5 % ) . Oxidation of p - Phenylenediboronic Acid in Alkaline Solution .- ( a ) A solution of the diboronic acid ( 5 g . ) in M - sodium hydroxide was shaken under oxygen for 40 hr ...
... solution gave unchanged diboronic acid ( 0.58 g . , 60.5 % ) . Oxidation of p - Phenylenediboronic Acid in Alkaline Solution .- ( a ) A solution of the diboronic acid ( 5 g . ) in M - sodium hydroxide was shaken under oxygen for 40 hr ...
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