Quarterly Journal of the Chemical Society of London, Volume 11 |
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Page 2163
... described the preparation and the synthetic uses of a new reagent , polyphosphoric acid ethyl ester ( PPEt ) , obtained from polyphosphoric acid and ethanol . It was reported that the 1,8 - naphthyridone ( I ) was obtained , in good ...
... described the preparation and the synthetic uses of a new reagent , polyphosphoric acid ethyl ester ( PPEt ) , obtained from polyphosphoric acid and ethanol . It was reported that the 1,8 - naphthyridone ( I ) was obtained , in good ...
Page 2204
... described . Attempts to hydrate these quinones were unsuccessful . The formation of certain ortho - acyloxycyclohexadienones from phenols by use of lead tetra - acetate is described . For the preparation of the starting phenols , boron ...
... described . Attempts to hydrate these quinones were unsuccessful . The formation of certain ortho - acyloxycyclohexadienones from phenols by use of lead tetra - acetate is described . For the preparation of the starting phenols , boron ...
Page 2715
... described above , and the isolation of the ketone ( 5 ) from high - temperature reactions of tetracyclone and dialkyl phosphonates has been described . 2c , e There is , however , some doubt about the mode of formation of ( 5 ) , and ...
... described above , and the isolation of the ketone ( 5 ) from high - temperature reactions of tetracyclone and dialkyl phosphonates has been described . 2c , e There is , however , some doubt about the mode of formation of ( 5 ) , and ...
Contents
Organic chemistry | 2023 |
Constituents of Withania somnifera Dun Part XII The withanolides of an Indian chemotype | 2032 |
Cyclic hydroxamic acids Part I Synthesis and reactions of 12dihydro1hydroxy46dimethyl2oxo | 2044 |
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acetic acid acetic anhydride acetone acetyl alcohol aldehyde alumina Amer amine ammonia anhydride anhydrous aqueous aromatic atom benzene benzyl bromide CH₂ Chem chloride chloroform chromatographed cm.¹ cm¯¹ cm¹ compound cooled crystallised cyclisation decomp derivative dichloromethane dilute dimer dimethyl dimethylformamide dioxan dried eluted ester ethanol ethyl acetate evaporated extracted with ether filtered filtrate Found gave give heated under reflux hydrochloric acid hydrolysis hydroxide i.r. spectrum iodide isolated isomer ketone lithium aluminium hydride methyl mixed m.p. mixture was stirred mmHg mmol mmole mole n.m.r. spectrum needles nitrogen obtained olefinic oxidation peroxide phenol potassium prepared protons pyridine reaction reduction reflux requires residue ring room temperature salt signals singlet sodium borohydride sodium hydroxide solid solution solvent spectra structure synthesis tetrahydrofuran treatment yield