Journal of the Chemical Society, Part 3Chemical Society., 1949 |
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Page 2332
... dissolved in dry pyridine and the solution was boiled under reflux for 10 minutes . The solvent was then removed in vacuo . The residue ( 0 · 3 g . ) of 2 : 6 - diketo - 2 ' - benzyl- 1:23 : 6 - tetrahydrothiazolo ( 5 ' : 4 ' - 4 : 5 ) ...
... dissolved in dry pyridine and the solution was boiled under reflux for 10 minutes . The solvent was then removed in vacuo . The residue ( 0 · 3 g . ) of 2 : 6 - diketo - 2 ' - benzyl- 1:23 : 6 - tetrahydrothiazolo ( 5 ' : 4 ' - 4 : 5 ) ...
Page 2333
... dissolved in boiling pyridine ( 25 c.c. ) , was heated under reflux for 12 hours with carbon disulphide ( 2 c.c. ) , the purine gradually separating from the hot solution . This ( 0-06 g . ) was filtered off , purified by dissolution in ...
... dissolved in boiling pyridine ( 25 c.c. ) , was heated under reflux for 12 hours with carbon disulphide ( 2 c.c. ) , the purine gradually separating from the hot solution . This ( 0-06 g . ) was filtered off , purified by dissolution in ...
Page 2355
... dissolved in warm water ( 0-3 c.c. ) , and the clear solution evaporated in vacuo over phosphoric oxide . A portion of the residual gum was dissolved in dry ether ( the anhydride was insoluble in this solvent ) , and the solution ...
... dissolved in warm water ( 0-3 c.c. ) , and the clear solution evaporated in vacuo over phosphoric oxide . A portion of the residual gum was dissolved in dry ether ( the anhydride was insoluble in this solvent ) , and the solution ...
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acetic acid acetic anhydride acetone acetyl added admixture alkaline alkyl aluminium chloride Amer ammonia aqueous solution atoms barium benzene boiling bromine Calc carbinol carbon catalyst Chem Chim chloroform colourless needles compound concentrated condensation cooled crystals cyclohexene D.Sc decomp derivatives dilute dioxan dissolved distilled dithizone dried equiv ester ethanol ethyl acetate ethyl alcohol evaporated EXPERIMENTAL filtered filtrate formed Found fraction gave give heated under reflux hydrocarbon hydrochloric acid hydrogen chloride hydrolysis iodide ions isolated ketone Light absorption light petroleum b. p. method methyl mixed m. p. mixture molecule obtained oxide phenyl plates potassium hydroxide precipitated prepared pressure prisms pyridine Q-enzyme R₁ R₂ reaction reagent reduced removed requires residue room temperature salt semicarbazone separated sodium hydroxide solid soluble solvent specimen structure substance sulphate sulphone sulphuric acid synthesis Table unsaturated washed yield