Quarterly Journal of the Chemical Society of London, Volume 21 |
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Page 3537
... further , N - tosyl- m - chloroaniline reacted with ẞ - chloropropionic acid to give only a poor yield of the desired N - tosyl acid ( V ; X = R1 R2 H , Y = Ts , R3 = Cl ) .15 We found that ẞ - chlorobutyric acid did not react with N ...
... further , N - tosyl- m - chloroaniline reacted with ẞ - chloropropionic acid to give only a poor yield of the desired N - tosyl acid ( V ; X = R1 R2 H , Y = Ts , R3 = Cl ) .15 We found that ẞ - chlorobutyric acid did not react with N ...
Page 3609
... further investigation , but the reaction may have some application as a means of selectively removing ester groups in certain environ- ments under neutral conditions . EXPERIMENTAL ' I.r. spectra were recorded on a Perkin - Elmer ...
... further investigation , but the reaction may have some application as a means of selectively removing ester groups in certain environ- ments under neutral conditions . EXPERIMENTAL ' I.r. spectra were recorded on a Perkin - Elmer ...
Page 3855
... Further elution afforded the enol acetate ( 2 ) ( 600 mg ) , the trans - desmotroposantonin acetate ( 3a ) ( 250 mg ) , and ( - ) - a - desmotroposantonin acetate ( 3b ) ( 475 mg ) . ( ii ) With phosphorus tribromide . Santonin ( 5 g ) ...
... Further elution afforded the enol acetate ( 2 ) ( 600 mg ) , the trans - desmotroposantonin acetate ( 3a ) ( 250 mg ) , and ( - ) - a - desmotroposantonin acetate ( 3b ) ( 475 mg ) . ( ii ) With phosphorus tribromide . Santonin ( 5 g ) ...
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