British Abstracts: Pure chemistry and physiology. ser. A1943 |
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... MeOH , inversion to the more stable trans- form occurs only at the C adjacent to CO , Me . Diphenic acid ( VII ) ... MeOH at room temp . gives the cis - syn - cis - Me H ester ( IX ) ( 76 · 5 % ) , m.p. 128.5— 129-5 ° , and with boiling ...
... MeOH , inversion to the more stable trans- form occurs only at the C adjacent to CO , Me . Diphenic acid ( VII ) ... MeOH at room temp . gives the cis - syn - cis - Me H ester ( IX ) ( 76 · 5 % ) , m.p. 128.5— 129-5 ° , and with boiling ...
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... MeOH . With NaOMe - MeOH at room temp . , ( I ) gives 58 % of ( III ) and 12 % of ( IV ) . Boiling HCl - MeOH converts ( III ) first into ( IV ) and then into ( II ) . I - CHCI , -sunlight or boiling NaOAC - EtOH has no effect on ( III ) ...
... MeOH . With NaOMe - MeOH at room temp . , ( I ) gives 58 % of ( III ) and 12 % of ( IV ) . Boiling HCl - MeOH converts ( III ) first into ( IV ) and then into ( II ) . I - CHCI , -sunlight or boiling NaOAC - EtOH has no effect on ( III ) ...
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... MeOH give Me 6 - methoxy - i - bisnorcholenate ( III ) ( 98 % ) , m.p. 72.0 72.8 ° , [ a ] 25 + 37-3 ° in CHCl3 , converted by KOH - MeOH intơ ( I ) having m.p. 168-171 ° and [ a ] 23 + 33 ° in CHCl ,. With a little H , SO , in boiling MeOH ...
... MeOH give Me 6 - methoxy - i - bisnorcholenate ( III ) ( 98 % ) , m.p. 72.0 72.8 ° , [ a ] 25 + 37-3 ° in CHCl3 , converted by KOH - MeOH intơ ( I ) having m.p. 168-171 ° and [ a ] 23 + 33 ° in CHCl ,. With a little H , SO , in boiling MeOH ...
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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