Quarterly Journal of the Chemical Society of London, Volume 21 |
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Page 3542
... sulphoxide , or recyclise after rotation about the C ( 2 ) -C ( 3 ) bond [ see ( 1 ) ] when the more stable ( S ) -sulphoxide ( 2 ; R1 = PhCH2 , R2 OMe ) forms . During the isomerisation the stereospecific syn - elimination - addition ...
... sulphoxide , or recyclise after rotation about the C ( 2 ) -C ( 3 ) bond [ see ( 1 ) ] when the more stable ( S ) -sulphoxide ( 2 ; R1 = PhCH2 , R2 OMe ) forms . During the isomerisation the stereospecific syn - elimination - addition ...
Page 3544
... sulphoxide ( 24 ; R = O · CH2 · CCl ) in toluene rapidly afforded a new , isomeric sulphoxide , shown by its 1H n.m.r. properties to be the compound ( 23 ; R = O'CH2 CCl ) . These reactions were repeated in the p - nitrobenzyl ester ...
... sulphoxide ( 24 ; R = O · CH2 · CCl ) in toluene rapidly afforded a new , isomeric sulphoxide , shown by its 1H n.m.r. properties to be the compound ( 23 ; R = O'CH2 CCl ) . These reactions were repeated in the p - nitrobenzyl ester ...
Page 3546
... sulphoxide ( 2 ; R1 PhCH2 , R2 = MeO ) ( 140 mg . , 20 % ) . Methyl 68 - Phenylacetamidopenicillanate 1,1 - Dioxide ( 8 ) .22 -The methyl ester ( 1 ; R = OMe ) ( 100 mg . ) was oxidised with potassium permanganate ( 0.2м ; 4 ml . ) in ...
... sulphoxide ( 2 ; R1 PhCH2 , R2 = MeO ) ( 140 mg . , 20 % ) . Methyl 68 - Phenylacetamidopenicillanate 1,1 - Dioxide ( 8 ) .22 -The methyl ester ( 1 ; R = OMe ) ( 100 mg . ) was oxidised with potassium permanganate ( 0.2м ; 4 ml . ) in ...
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