Quarterly Journal of the Chemical Society of London, Volume 21 |
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Page 3525
... Ph Ph OH Ph Ph Ph Ḥ Ph Ph Ph Ph H Ph Ph H Ph ***** Ph Ph ( IV ) ᏢᏂ H Ph H Ph Ph H Ph Ph Ph Ph H ( VI ) H Ph ( V ) H Ph ( VII ) H cis ( VI ) H trans dihydro - dimers ( V ) and ( VI ) suggesting that the stereo- chemistry at C - 5 and C ...
... Ph Ph OH Ph Ph Ph Ḥ Ph Ph Ph Ph H Ph Ph H Ph ***** Ph Ph ( IV ) ᏢᏂ H Ph H Ph Ph H Ph Ph Ph Ph H ( VI ) H Ph ( V ) H Ph ( VII ) H cis ( VI ) H trans dihydro - dimers ( V ) and ( VI ) suggesting that the stereo- chemistry at C - 5 and C ...
Page 3527
... Ph Ph Ph Ph Ph Fh Ph Ph ( XXI ) ( XXII ) Ph Ph wPh Ph Ph Ph Ph Ph Ph Ph Ph Ph R R ( XXIII ) R = H ( XXV ) R = H XXXXIV ) R = Me 6.8- of the product from an intramolecular Diels - Alder addition would give rise to ( XXII ) but the n.m.r. ...
... Ph Ph Ph Ph Ph Fh Ph Ph ( XXI ) ( XXII ) Ph Ph wPh Ph Ph Ph Ph Ph Ph Ph Ph Ph R R ( XXIII ) R = H ( XXV ) R = H XXXXIV ) R = Me 6.8- of the product from an intramolecular Diels - Alder addition would give rise to ( XXII ) but the n.m.r. ...
Page 3528
... Ph - C = C - Ph ] + was absent in ( XXVIII ) but compensated for by a peak at 178 [ Ph - C = C - Ph ] • + . Dehydration of the cyclopentenones ( XXVII ) and ( XXVIII ) with acetic acid - sulphuric acid gave the blue dehydro - dimers ...
... Ph - C = C - Ph ] + was absent in ( XXVIII ) but compensated for by a peak at 178 [ Ph - C = C - Ph ] • + . Dehydration of the cyclopentenones ( XXVII ) and ( XXVIII ) with acetic acid - sulphuric acid gave the blue dehydro - dimers ...
Contents
Organic chemistry | 3513 |
Partially fluorinated heterocyclic compounds Part IX The syntheses of 4567tetrafluorobenzobfuran | 3516 |
Reactions of cyclohexadienes Part XII Some dienamines and dimethyl acetylenedicarboxylate | 3517 |
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acetic acid acetic anhydride acetone alkyl Amer amine aqueous ethanol aromatic atom benzene benzene-light petroleum benzyl boiling boron tribromide bromide Calc carbonyl CH₂ CHCl3 Chem chloroform chromatography cm¯¹ cm¹ CO₂H compound condensation cooled crystallised decomp derivatives diazomethane dimer dimethyl dimethylformamide dioxan dried elution enol ergochrysin ester ethanol ether ethyl acetate EtOH evaporated extracted filtered Found gave give heated hydrogen chloride i.r. spectrum identical isolated isomers ketone log ɛ mass spectra methyl methylene mixed m.p. mixture myricanone n.m.r. spectrum nitrogen Nujol obtained olefinic oxidation petroleum Ph Ph Ph PhCH₂ phenolic potassium prepared prisms protons pyridine quinuclidine reaction refluxed requires residue ring room temperature S)-sulphoxide sclerotiorin signals singlet sodium hydrogen carbonate sodium hydroxide solid solution solvent stirred structure sulphoxide synthesis triethylamine vacuo W. B. Whalley washed yellow needles yield