British Abstracts: Pure chemistry and physiology. ser. A1943 |
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Kết quả 1-3 trong 89
Trang 15
... alkali , yield alkali - insol . resins , from which cannabidiol ( I ) and cannabinol ( II ) respectively have been isolated . The alkali - sol . portion of the resin may contain esters of ( I ) and ( II ) with a phenolic acid , which ...
... alkali , yield alkali - insol . resins , from which cannabidiol ( I ) and cannabinol ( II ) respectively have been isolated . The alkali - sol . portion of the resin may contain esters of ( I ) and ( II ) with a phenolic acid , which ...
Trang 63
... alkali to convert the anhydride of ( I ) into ( XI ) . CH , N , ( excess ) converts ( II ) or ( XI ) into the trans - syn - cis - Me , ester ( XII ) , m.p. 12.5-14.5 ° , hydrolysed by boiling conc . HCI - ACOH to ( II ) and the cis ...
... alkali to convert the anhydride of ( I ) into ( XI ) . CH , N , ( excess ) converts ( II ) or ( XI ) into the trans - syn - cis - Me , ester ( XII ) , m.p. 12.5-14.5 ° , hydrolysed by boiling conc . HCI - ACOH to ( II ) and the cis ...
Trang 93
... alkali .. The methods which do not employ alkali hydroxide give less coloured products . ( II ) is unaffected by hot dil . HSO , and hence does not appear to have the constitution corre- sponding with the structure of the glycosides ...
... alkali .. The methods which do not employ alkali hydroxide give less coloured products . ( II ) is unaffected by hot dil . HSO , and hence does not appear to have the constitution corre- sponding with the structure of the glycosides ...
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absorption absorption spectra Acad acetate acid AcOH activity adsorption alkali Amer Anal analysis ation atoms boiling calc catalyst cellulose CHCI Chem chemical chloride CHPh CO₂ CO₂H coeff colour compounds Compt conc concn const containing converted corr cryst crystals curves decomp decreases derivatives described determined diazotised dioxan discussed effect electrolytes electron energy equilibrium ester ether EtOH formation formed Geol gives H₂ H₂O H₂SO heat hydrochloride hydrogen hydrolysed increases ionisation ions isomerised ketone lattice liquid measurements MeOH metal method methyl minerals mixtures NaOH obtained oxidation oxidised oxime particles phenols PhOH Physical Rev picrate polarisation polymerisation pptd pptn prep presence pressure reaction reagent reduced rend room temp salts semicarbazone solubility solution solvent spectra spectrum structure substances surface theory thermal titration vals vapour X-ray yield