Journal of the Chemical Society, Part 1The Society., 1947 |
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Page 94
... methanol ) . 19 ° Separation of the stereoisomerides . ( a ) By following the procedure adopted by Stevens ( J. , 1930 , 2113 ) this mixture ( A ) of diastereoisomerides was separated by fractional precipitation and fractional ...
... methanol ) . 19 ° Separation of the stereoisomerides . ( a ) By following the procedure adopted by Stevens ( J. , 1930 , 2113 ) this mixture ( A ) of diastereoisomerides was separated by fractional precipitation and fractional ...
Page 380
... methanol ( 50 % ; 300 c.c. ) was treated at 50 ° with one of silver nitrate ( 5.7 g . ) in water ( 50 c.c. ) , added rapidly with stirring . The mixture was made just alkaline by the addition of dilute aqueous ammonia ( 10 c.c. , of d ...
... methanol ( 50 % ; 300 c.c. ) was treated at 50 ° with one of silver nitrate ( 5.7 g . ) in water ( 50 c.c. ) , added rapidly with stirring . The mixture was made just alkaline by the addition of dilute aqueous ammonia ( 10 c.c. , of d ...
Page 387
... methanol . When the mixture was heated for an hour at 225 ° the yields of crude amidine and picrate were 49 and 36 % respectively . Preparation of N - Acylbenzenesulphonalkylamides and N - Acylbenzenesulphonanilides . N ...
... methanol . When the mixture was heated for an hour at 225 ° the yields of crude amidine and picrate were 49 and 36 % respectively . Preparation of N - Acylbenzenesulphonalkylamides and N - Acylbenzenesulphonanilides . N ...
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Common terms and phrases
acetic anhydride acetone acetyl added alkaline Amer amidine amine ammonia ammonium aqueous sodium atoms benzene boiling bromide Calc CH₂ charcoal Chem chloroform colourless needles compound concentrated hydrochloric acid condensation cooled crystallised crystallised from alcohol crystals cyanide decomp derivative diazotised dilute dissolved distilled dried ester ethyl acetate experimental extracted with ether filtered filtrate formed Found fraction gave give m. p. H₂O heated hydrochloric acid hydrogen chloride hydrolysis iodide isolated light petroleum m. p. and mixed methanol Methiodide method methyl alcohol minutes mixed m. p. molecular molecule nitration nitric acid obtained oxidation pale yellow petroleum b. p. phenyl picrate polymer polymerisation potassium precipitate prepared prisms pyridine reduced pressure refluxed removed requires residue room temperature salt separated sodium carbonate sodium hydroxide solid soluble solvent stirred structure substance sulphate sulphide sulphone sulphuric acid washed yellow needles yield