Quarterly Journal of the Chemical Society of London |
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Page 1256
... esters ( Table II ) by cyclization in glycerol ( method 1 ) or through the corresponding diketones ( Table III ) ( method 2 ) . Yield ( % ) of Corre- sponding ester Re- pyrone from ester , no . Pyrone formed.1 8 13 4 ' - Chloro - 7 ...
... esters ( Table II ) by cyclization in glycerol ( method 1 ) or through the corresponding diketones ( Table III ) ( method 2 ) . Yield ( % ) of Corre- sponding ester Re- pyrone from ester , no . Pyrone formed.1 8 13 4 ' - Chloro - 7 ...
Page 1440
... esters on treatment with alcohols . The methyl ester prepared in this way for the first time yielded the same reineckate and sulphate as were obtained by the methanolic hydrogen chloride route , and the benzyl ester similarly prepared ...
... esters on treatment with alcohols . The methyl ester prepared in this way for the first time yielded the same reineckate and sulphate as were obtained by the methanolic hydrogen chloride route , and the benzyl ester similarly prepared ...
Page 1775
... ester has the normal rather than the cyclic structure , as would indeed by expected in view of the method of preparation . In order to make available another cis - ß - acylacrylic ester having an unambiguous structure , the parent ...
... ester has the normal rather than the cyclic structure , as would indeed by expected in view of the method of preparation . In order to make available another cis - ß - acylacrylic ester having an unambiguous structure , the parent ...
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Common terms and phrases
absorption acetic anhydride acetone acetyl added alcohol alkaline alunite Amer amine ammonia anhydrous anilide aqueous sodium atom benzene boiling bromine trifluoride Calc carbonate CH₂ Chem chloroform colour colourless needles compound condensation containing cooled crystallised crystals cyanide cyclisation D.Sc decomp derivatives dilute dissolved distilled dried equiv ester ethanol ethyl acetate evaporated EXPERIMENTAL extracted with ether filtered filtrate fluoride formation formed Found fraction gave give heated under reflux hydrochloric acid hydrogen chloride hydrolysis iodide iodine ions isolated kcals ketone light petroleum b. p. liquid melting method methyl minutes mixed m. p. molecule nitrate nitrile nitrogen obtained oxalate oxide oxime oxygen pickeringite picrate piperidine potassium potassium hydroxide precipitate prepared prisms pyridine reductive dissolution removed requires residue room temperature salt semicarbazone separated sodium hydroxide solid soluble solvent specimen sulphate sulphuric acid values washed xylose yellow needles yield