Quarterly Journal of the Chemical Society of London, Volume 1, Pages 1-996 |
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Results 1-3 of 81
Page 20
... ( VIII ) arises directly by loss of hydrazine . The latter , reacting with the excess of carbodi - imide , yields the 4 - aryl - 3,5 - diarylamino - 1,2,4 - triazole ( IX ) by di - addition and loss of arylamine , a reaction established ...
... ( VIII ) arises directly by loss of hydrazine . The latter , reacting with the excess of carbodi - imide , yields the 4 - aryl - 3,5 - diarylamino - 1,2,4 - triazole ( IX ) by di - addition and loss of arylamine , a reaction established ...
Page 27
... ( VIII ) , also isolable as their highly crystalline potassium salts . Confirmation of their structure is given in conjunction with that of the thio - analogues ( XVII ) ( see later ) . Guha and Hye reported the cyclisation 5 by alkali of ...
... ( VIII ) , also isolable as their highly crystalline potassium salts . Confirmation of their structure is given in conjunction with that of the thio - analogues ( XVII ) ( see later ) . Guha and Hye reported the cyclisation 5 by alkali of ...
Page 343
... ( VIII ) . The benzene solvent - shift data recorded for ( VI ) , ( VII ) , and ( VIII ) ( see Table 3 ) demonstrate considerable similarities to their respective A3 - isomers and also to the corresponding penicillin derivatives . The 6 ...
... ( VIII ) . The benzene solvent - shift data recorded for ( VI ) , ( VII ) , and ( VIII ) ( see Table 3 ) demonstrate considerable similarities to their respective A3 - isomers and also to the corresponding penicillin derivatives . The 6 ...
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