Quarterly Journal of the Chemical Society of London, Volume 1, Pages 1-1108 |
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Page 267
... ether ( II ) to ( - ) - ẞ - desmotroposantonin methyl ether ( IIk ) with potassium carbonate . The lactone ( IIi ) ( 1 g . , [ x ]。−123.8 ° ) was treated as in experiment ( a ) . The lactonic product consisting of 47.5 % ( - ) -B ...
... ether ( II ) to ( - ) - ẞ - desmotroposantonin methyl ether ( IIk ) with potassium carbonate . The lactone ( IIi ) ( 1 g . , [ x ]。−123.8 ° ) was treated as in experiment ( a ) . The lactonic product consisting of 47.5 % ( - ) -B ...
Page 268
... ethers : A , ( - ) - a - DTS methyl ether ; B , ( + ) - ß - DTS methyl ether On crystallisation from methanol , ( + ) - a - desmotroposan- tonous acid ( IXa ) ( 140 mg . ) was obtained as needles , m . p . and mixed m . p . 178 ° , [ x ] ...
... ethers : A , ( - ) - a - DTS methyl ether ; B , ( + ) - ß - DTS methyl ether On crystallisation from methanol , ( + ) - a - desmotroposan- tonous acid ( IXa ) ( 140 mg . ) was obtained as needles , m . p . and mixed m . p . 178 ° , [ x ] ...
Page 295
... Ether was added , the organic layer was separated , and the aqueous layer was shaken with more ether . The extracts were dried ( Na2SO4 ) , the solvents were removed , and the residue was distilled to give the product as a colourless ...
... Ether was added , the organic layer was separated , and the aqueous layer was shaken with more ether . The extracts were dried ( Na2SO4 ) , the solvents were removed , and the residue was distilled to give the product as a colourless ...
Contents
By A J HUBERT | 2 |
6Methoxy3methylbenzofurano47quinone dimers of 3methylbenzofurans and tautomerism in 2acetyl | 3 |
By R GARNER and H SUSCHITZKY | 74 |
Copyright | |
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absorption acetic acid acetic anhydride acetone acetyl adduct alcohol alumina Amer amine aromatic ation band benzene bromide Calc carbonyl CH₂ Chem chloride chloroform chromatography cm.¹ CO₂Me colourless compound cooled corresponding crystallised decomp derivatives diazomethane dilute dioxan dissolved distilled doublet dried elution ester ethanol ether ethyl acetate EtOH evaporated extracted with ether filtered filtrate Found fraction gave give heated under reflux hydrochloric acid hydrogenolysis hydrolysis hydroxyl infrared infrared spectrum isolated isomer ketone lactone light petroleum b. p. lithium aluminium hydride log ɛ methyl angolensate methyl ester methylene mixed m. p. mmoles mole multiplet n.m.r. spectrum needles Nujol obtained oxetan oxidation peaks phenyl potassium prepared protons pyridine reaction mixture reduction requires residue ring room temperature singlet sodium hydroxide solid solution solvent spectra spectrum showed stirred structure sulphuric acid ultraviolet VIII washed yellow yield