Quarterly Journal of the Chemical Society of London, Volume 1, Pages 1-996 |
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Page 50
... reduction of ( VI ) with lithium aluminium hydride afforded compound ( IX ) the cis , exo - stereochemistry of which was again determined by n.m.r. spectroscopy . Isomer ( IX ) could be obtained more easily and in better yield by reduction ...
... reduction of ( VI ) with lithium aluminium hydride afforded compound ( IX ) the cis , exo - stereochemistry of which was again determined by n.m.r. spectroscopy . Isomer ( IX ) could be obtained more easily and in better yield by reduction ...
Page 270
... Reduction of the benzyl sulphonyl derivatives of cysteamine , L - cysteine , and L - homocysteine in liquid ammonia with metallic sodium gave the corresponding sulphinic acids in yields in the range 80-90 % . Synthesis of ...
... Reduction of the benzyl sulphonyl derivatives of cysteamine , L - cysteine , and L - homocysteine in liquid ammonia with metallic sodium gave the corresponding sulphinic acids in yields in the range 80-90 % . Synthesis of ...
Page 435
... reduction is superior to previously re- ported methods . Its advantages and possible applications are discussed . SELECTIVE reduction of aromatic polynitro - compounds is convenient for synthesizing certain amines that are difficult to ...
... reduction is superior to previously re- ported methods . Its advantages and possible applications are discussed . SELECTIVE reduction of aromatic polynitro - compounds is convenient for synthesizing certain amines that are difficult to ...
Contents
Organic chemistry | 1 |
oestrone | 10 |
Heterocyclic compounds from urea derivatives Part XVI Interaction of carbonohydrazide and carbodi | 19 |
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absorption acetic acid acetone added adduct alcohol alumina Amer aqueous aromatic band benzene boiled bromide Calc CH₂ chalcone Chem chim chloride chloroform chromatography cm.¹ colourless compound cooled crystallised cyclisation cyclohexane decomp derivatives diluted dimethyl dimethylformamide dioxan distilled doublet dried eluted ester ethanol ethyl acetate EtOH evaporated extracted with ether filtered filtrate Found fraction gave give heated under reflux hydrochloric acid hydrolysis i.r. spectrum identical irradiation isolated isomer ketone light petroleum b.p. lithium aluminium hydride mass spectra methylene mixed m.p. mixture mmoles mole n.m.r. spectrum needles nitrogen Nujol obtained olefin oxidation peak phosphine potassium prepared protons pyridine reaction reagent rearrangement reduced pressure reflux requires residue ring room temperature showed signals silica gel singlet sodium hydroxide solid solution solvent stirred structure synthesis Table tetrahydrofuran VIII yellow yield zygosporin