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 3148
... Fractions 1-7 were of 21 .; later fractions were of 1 1 . Fraction 3 contained 5 - hydroxymethyl - 2 - furoic acid and fraction 5 contained gibberellic acid . Fraction 6 was rechromatographed on silica gel and eluted with increasing ...
... Fractions 1-7 were of 21 .; later fractions were of 1 1 . Fraction 3 contained 5 - hydroxymethyl - 2 - furoic acid and fraction 5 contained gibberellic acid . Fraction 6 was rechromatographed on silica gel and eluted with increasing ...
Page 4003
... fractions were obtained ; the last part of the fifth fraction was eluted with м - sodium chloride in 0.1m - hydrochloric acid . The solutions containing each of the five fractions were pooled and the optical density at 260 mp measured ...
... fractions were obtained ; the last part of the fifth fraction was eluted with м - sodium chloride in 0.1m - hydrochloric acid . The solutions containing each of the five fractions were pooled and the optical density at 260 mp measured ...
Page 4126
... fractions : ( a ) b . p . 80–130 ° ( 16.6 g . ) ; ( b ) b . p . 130—160 ° ( 0 · 3 g . ) ; ( c ) b . p . 160-188 ° ( 1.2 g . ) . Fraction ( a ) was recovered diphenylphosphine ( 90 % ) . Fraction ( c ) , a rather viscous oil , had an ...
... fractions : ( a ) b . p . 80–130 ° ( 16.6 g . ) ; ( b ) b . p . 130—160 ° ( 0 · 3 g . ) ; ( c ) b . p . 160-188 ° ( 1.2 g . ) . Fraction ( a ) was recovered diphenylphosphine ( 90 % ) . Fraction ( c ) , a rather viscous oil , had an ...
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