British Abstracts: Pure chemistry and physiology. ser. A1940 |
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Trang 95
... AcOH give a Br - derivative , m.p. 170-172 ° , converted by boiling CH , N into ( ? 14 : 5 ) -œstrene - 3 : 17 - dione , m.p. 146-148 ° . Hydro- genation ( PtO2 ) of ( A ) in HCI - MeOH at 25 ° / 2 atm . gives œstran - 17 ( a ) -ol ( II ) ...
... AcOH give a Br - derivative , m.p. 170-172 ° , converted by boiling CH , N into ( ? 14 : 5 ) -œstrene - 3 : 17 - dione , m.p. 146-148 ° . Hydro- genation ( PtO2 ) of ( A ) in HCI - MeOH at 25 ° / 2 atm . gives œstran - 17 ( a ) -ol ( II ) ...
Trang 121
... AcOH there is no nitration at 50 ° , the product being pure ( II ) . In the product formed at 70 ° ( III ) is present in small amount whilst at 70— 80 ° both oxidation and nitration occur . Nitration in COMe ,, even if much H2O is ...
... AcOH there is no nitration at 50 ° , the product being pure ( II ) . In the product formed at 70 ° ( III ) is present in small amount whilst at 70— 80 ° both oxidation and nitration occur . Nitration in COMe ,, even if much H2O is ...
Trang 312
... AcOH or -EtCO2H at -10 ° gives a resin ) by PBr , at 100 ° . Zn - AcOH does not affect ( III ) , but H2 - Pd– BaSO4 gives ( IV ) . ( 2 : 4 : 6 : 1 - С¿H2Me ̧ · CO · CHBг ) 2 ( prep . from 2 : 4 : 6 : 1- CH2Me , CO CH : CBr · CO.C ̧H2Meg ...
... AcOH or -EtCO2H at -10 ° gives a resin ) by PBr , at 100 ° . Zn - AcOH does not affect ( III ) , but H2 - Pd– BaSO4 gives ( IV ) . ( 2 : 4 : 6 : 1 - С¿H2Me ̧ · CO · CHBг ) 2 ( prep . from 2 : 4 : 6 : 1- CH2Me , CO CH : CBr · CO.C ̧H2Meg ...
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EXPERIMENTAL PHYSIOLOGY | |
1940 | 1 |
CHEMISTRY AND RELATED SUBJECTS | |
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absorption absorption spectra Acad acid activation energy activity adsorbed alkali alloys Amer Anal analysis approx ation atoms Atti X Congr bands calc catalyst CCl4 Chem chemical Chim chloride CO₂ coeff colloidal compounds Compt concn const crystals curves decomp decreases described determined deuterons diffusion discussed dissociation effect electrolytes electron emission energy equation equilibrium EtOH Faraday Soc ferromagnetic film formation gases H₂ H₂O heat hydrogen hydrolysis increases intensity ionisation ions isotopes kg.-cal lattice layer liquid magnetic Me.v measured meson mesotrons metals method mixtures N₂ neutrons obtained oxidation paramagnetic particles phase Phys Physical Rev polarisation potential pptd pressure Proc protons Raman reaction rend Russ salts SiO2 solid solid solution solubility solutions solvent spectra spectrum structure surface temp theory thermal titration Trans vals vapour velocity viscosity X-ray