British Abstracts: Pure chemistry and physiology. ser. A1944 |
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Trang 21
... AcOH into A - 2 : 47 : 7 - tetrabromocholestene - 3 : 6 - dione ( I ) , m.p. 190 ° , [ a ] + 22 ° , converted by 15 % HBr - AcOH in CHCI , into A1 - 4 : 7 : 7 - tri- bromocholestene - 3 : 6 - dione ( II ) , m.p. 195 ° , [ a ] 2 + 16 ...
... AcOH into A - 2 : 47 : 7 - tetrabromocholestene - 3 : 6 - dione ( I ) , m.p. 190 ° , [ a ] + 22 ° , converted by 15 % HBr - AcOH in CHCI , into A1 - 4 : 7 : 7 - tri- bromocholestene - 3 : 6 - dione ( II ) , m.p. 195 ° , [ a ] 2 + 16 ...
Trang 107
... AcOH or n - C , H17 CO2H gives CO ( NH CH2Ph ) 2 , m.p. 166-167 ° . N - p - Dimethylaminophenyl - N'- benzylthiocarbamide has m.p. 127-128 ° . With CHCH.CO2H , a - bromopalmitic acid , or CHMeBr CH , CO2H , ( V ) gives only ( VI ) . No ...
... AcOH or n - C , H17 CO2H gives CO ( NH CH2Ph ) 2 , m.p. 166-167 ° . N - p - Dimethylaminophenyl - N'- benzylthiocarbamide has m.p. 127-128 ° . With CHCH.CO2H , a - bromopalmitic acid , or CHMeBr CH , CO2H , ( V ) gives only ( VI ) . No ...
Trang 229
... AcOH ) to 5 - hydroxy - 3 ( B ) -acetoxycholestane ( II ) , 0-83 , 0-423 ) in CHCl3 , m.p. 185-185 · 5 ° , [ a ] D + 12 · 5 ° , + 10.7 ° ( c which gives a very stable chromate with CrO , in AcOH , hydrolysed [ as is ( II ) ] to 3 ( 8 ) ...
... AcOH ) to 5 - hydroxy - 3 ( B ) -acetoxycholestane ( II ) , 0-83 , 0-423 ) in CHCl3 , m.p. 185-185 · 5 ° , [ a ] D + 12 · 5 ° , + 10.7 ° ( c which gives a very stable chromate with CrO , in AcOH , hydrolysed [ as is ( II ) ] to 3 ( 8 ) ...
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absorption spectra Acad acetate acid AcOH activity adsorbed adsorption alkali alloys Amer anilide ation atoms bands boiling calc catalyst CHCI Chem chemical chloride CHMe CO₂ CO₂H coeff compounds Compt conc concn const containing converted corr cryst crystals curves decomp decrease dehydrogenation derivative determined diffusion dioxan discussed dissociation effect electrolytes electron energy equation equilibrium ester Et₂O EtOH eutectic fluorescence formation formed gives H₂ H₂O H₂SO heat hydrochloride hydrogen hydrolysed increases intensity investigated ions isomerides isomerisation ketone Kinetics Kolloid-Z lattice liquid measured MeOH metal method mixture NaCl NaOH obtained oxidation oxidised oxime particles phase PhOH Physical Rev picrate polymerisation prep presence pressure Proc Raman reaction reduced rend room temp salt semicarbazone solid solid solution solubility solution solvent spectrum structure substances surface theory thermal vals viscosity X-ray yield