British Abstracts: Pure chemistry and physiology. ser. A1943 |
Từ bên trong sách
Kết quả 1-3 trong 100
Trang 33
... AcOH at 110-120 ° into p - anisyl - AaB - butenolide [ B - p - anisyl- △ -butenolactone ] ( II ) , m.p. 120 , demethylated by AcOH - HBr at 120-140 ° to ( slightly impure ) B - p - hydroxyphenyl - AaB - butenolide ( III ) , m.p. 262.5 ...
... AcOH at 110-120 ° into p - anisyl - AaB - butenolide [ B - p - anisyl- △ -butenolactone ] ( II ) , m.p. 120 , demethylated by AcOH - HBr at 120-140 ° to ( slightly impure ) B - p - hydroxyphenyl - AaB - butenolide ( III ) , m.p. 262.5 ...
Trang 41
... AcOH at room temp . give the 17 - Br - derivative ( II ) , m.p. 93- 96 , which with Fe dust in AcOH at 100 ° or H2 - Pd - BaSO4 in CH , N - dioxan at 40 lb. regenerates ( I ) and with boiling C , H , N gives A - allopregnen - 3 ( B ) ...
... AcOH at room temp . give the 17 - Br - derivative ( II ) , m.p. 93- 96 , which with Fe dust in AcOH at 100 ° or H2 - Pd - BaSO4 in CH , N - dioxan at 40 lb. regenerates ( I ) and with boiling C , H , N gives A - allopregnen - 3 ( B ) ...
Trang 273
... AcOH at 100 ° nto ( II ) and by PC1 - CHCI , into oils , but unaffected by MgRX , holing HCI - ACOH , KOH- or NaOMe - MeOH , AcCl - H2SO ,, NH2OH , NH , CO NH - NH2 , or Zn - AcOH . Boiling 10 : 1 : 1 AcOH - HCI - H2O Or AcOH - HC1 ...
... AcOH at 100 ° nto ( II ) and by PC1 - CHCI , into oils , but unaffected by MgRX , holing HCI - ACOH , KOH- or NaOMe - MeOH , AcCl - H2SO ,, NH2OH , NH , CO NH - NH2 , or Zn - AcOH . Boiling 10 : 1 : 1 AcOH - HCI - H2O Or AcOH - HC1 ...
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