Journal of the Chemical SocietyThe Society., 1965 "Titles of chemical papers in British and foreign journals" included in Quarterly journal, v. 1-12. |
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Page 3129
... ethyl acetate ( 2 × 60 ml . ) . The solution was acidified with hydrochloric acid and extracted with ethyl acetate ( 150 and 60 ml . ) . The combined extracts were washed and dried ( Na2SO ) , and the solvent removed , affording a solid ...
... ethyl acetate ( 2 × 60 ml . ) . The solution was acidified with hydrochloric acid and extracted with ethyl acetate ( 150 and 60 ml . ) . The combined extracts were washed and dried ( Na2SO ) , and the solvent removed , affording a solid ...
Page 3149
... ethyl acetate and chromatographed on silica gel ( ethyl acetate - light petroleum ) . The fractions eluted with 10 and 15 % ethyl acetate were solid and were recrystallised from acetone - light petroleum , giving 28 - acetoxy - 13 ...
... ethyl acetate and chromatographed on silica gel ( ethyl acetate - light petroleum ) . The fractions eluted with 10 and 15 % ethyl acetate were solid and were recrystallised from acetone - light petroleum , giving 28 - acetoxy - 13 ...
Page 3150
... ethyl acetate . The neutral fraction ( 0.19 g . ) was chromatographed on alumina ( ethyl acetate- light petroleum ) . Elution with 20 % of ethyl acetate gave methyl 13 - methyl - 8 - methylene- 2 - oxogibbane - la , 4ax , 10ẞ ...
... ethyl acetate . The neutral fraction ( 0.19 g . ) was chromatographed on alumina ( ethyl acetate- light petroleum ) . Elution with 20 % of ethyl acetate gave methyl 13 - methyl - 8 - methylene- 2 - oxogibbane - la , 4ax , 10ẞ ...
Contents
By W GEE R A SHAW and B C SMITH | 3012 |
Organic | 3015 |
By DAVID PETERS | 3026 |
Copyright | |
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absorption acetic acid acetone added alcohol alumina Amer amine aqueous aromatic atom band benzene boron boron trichloride bromide butene butenolide Calc calculated carbonyl catalyst cation CH₂ Chem chloride chloroform chromatography cm.¹ CO₂Me complexes compounds concentration conjugated constants crystallised crystals delocalisation diluted dimethyl dimethylformamide dioxan distilled diyne dried electron eluted energy equilibrium ester ethanol ethyl acetate evaporated experimental extracted with ether Figure formation formed Found fraction frequency gave gibberellin give halides heated hexane hydrochloric hydrolysis hydroxide infrared infrared spectra iodide isomer isomerisation isoxazole ketone ligand light petroleum lophine method mixture molar mole molecular molecule needles nitrogen obtained orbitals oxidation peak petroleum b. p. phenyl piperidine polymers potassium prepared pressure proton pyridine reaction reflux requires residue resonance ring room temperature sodium hydrogen carbonate solid solution solvent spectrum structure Table ultraviolet values washed yield