Journal of the Chemical SocietyThe Society., 1961 |
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Page 4551
... compounds , but the yield of 9,11 - dichloro - compound was low . Owing to the instability of 9,11 - dichloro - compounds in hot methanol , the usual method of hydrolysis of 3,20 - diacetoxy - 17,20 - epoxides to 3,17 - diols with hot ...
... compounds , but the yield of 9,11 - dichloro - compound was low . Owing to the instability of 9,11 - dichloro - compounds in hot methanol , the usual method of hydrolysis of 3,20 - diacetoxy - 17,20 - epoxides to 3,17 - diols with hot ...
Page 4987
Chemical Society (Great Britain). trans - compound . Cold solutions of the cis - compound in benzene or chloroform are orange , but when warmed they become deep red , and the trans - compound is deposited on cooling . The hot acetone ...
Chemical Society (Great Britain). trans - compound . Cold solutions of the cis - compound in benzene or chloroform are orange , but when warmed they become deep red , and the trans - compound is deposited on cooling . The hot acetone ...
Page 5206
... compound . We have concluded that the orange compound has structure ( III ; R = OMe ) and that the purple compound has structure ( V ; R = OMe ) . The corresponding orange and purple compounds from ethyl o - nitrobenzoylacetate have ...
... compound . We have concluded that the orange compound has structure ( III ; R = OMe ) and that the purple compound has structure ( V ; R = OMe ) . The corresponding orange and purple compounds from ethyl o - nitrobenzoylacetate have ...
Contents
NO PAGE | 4269 |
NO PAGE | 4290 |
The existence of the P¹P¹diethyl pyrophosphate | 4321 |
110 other sections not shown
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absorption acetic acid acetic anhydride acetone added alcohol alkaline alumina Amer amine ammonia atom band benzene benzoyl chloride bond bromide Calc carbonate carbonyl CH₂ Chem chloride chloroform chromatography cm.¹ complex compound concentration constant cooled crystallised crystals decomp derivative diethyl dilute dimer diol dioxan distilled dried eluted ester ethanol ethyl acetate evaporated EXPERIMENTAL ferrocene filtered filtrate formed Found fraction gave give H₂O heated hydrochloric acid hydrolysis hydroxyl infrared infrared spectrum iodide isolated isomer ketone lactone lithium aluminium hydride m. p. and mixed mixed m. p. mixture mole molecules needles nitrate nitrobenzene nitrogen obtained oxidation potassium precipitate prepared prisms proton pyridine reaction reactivity reagent reduced refluxed requires residue room temperature salt sodium hydroxide solid soluble solution solvent spectra steric stirred structure substituents sulphuric acid Table tetrahydrofuran triarsine ultraviolet values washed yellow yield