British Abstracts: Pure chemistry and physiology. ser. A1943 |
Từ bên trong sách
Kết quả 1-3 trong 19
Trang 95
... isomerised in H2O and EtOH but much less markedly in Et , O and C.H , whereas ( II ) is more uniformly isomerised ( 66-90 % ) in different solvents . Isomerisation of ( II ) occurs very rapidly in H2O , EtOH , and AcOH but slowly in ...
... isomerised in H2O and EtOH but much less markedly in Et , O and C.H , whereas ( II ) is more uniformly isomerised ( 66-90 % ) in different solvents . Isomerisation of ( II ) occurs very rapidly in H2O , EtOH , and AcOH but slowly in ...
Trang 283
... isomerised to ( III ) by KOH - aq . EtOH at room temp . The pre - isomerisation of ( I ) to d - lyserghydrazide and thus the direct production of ( III ) is not advisable since some back - isomerisation always occurs . Similarly ...
... isomerised to ( III ) by KOH - aq . EtOH at room temp . The pre - isomerisation of ( I ) to d - lyserghydrazide and thus the direct production of ( III ) is not advisable since some back - isomerisation always occurs . Similarly ...
Trang 331
... isomerised by H2SO , or C , H ,, OK to ( II ) , ( I ) and ( II ) are the trans- and cis - derivative , respectively . Hydrogenation ( Pd - black , MeOH ) of ( II ) gives its side - chain H2 - derivative ( semi- carbazone , m.p. 207 ...
... isomerised by H2SO , or C , H ,, OK to ( II ) , ( I ) and ( II ) are the trans- and cis - derivative , respectively . Hydrogenation ( Pd - black , MeOH ) of ( II ) gives its side - chain H2 - derivative ( semi- carbazone , m.p. 207 ...
Ấn bản in khác - Xem tất cả
Thuật ngữ và cụm từ thông dụng
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