British Abstracts: Pure chemistry and physiology. ser. A1944 |
Từ bên trong sách
Kết quả 1-3 trong 94
Trang 161
... ester , m.p. 62- 63 ° ) . H. W. 6 IV . Synthesis of coumarins from o - hydroxyaryl alkyl ketones . Formation of o ... ester , b.p. 165 ° / 7 mm . trans - 2 - methoxy - a : 5 - dimethyl- , m.p. 109-110 ° ( Et ester , b.p. 160 ° / 5 mm ...
... ester , m.p. 62- 63 ° ) . H. W. 6 IV . Synthesis of coumarins from o - hydroxyaryl alkyl ketones . Formation of o ... ester , b.p. 165 ° / 7 mm . trans - 2 - methoxy - a : 5 - dimethyl- , m.p. 109-110 ° ( Et ester , b.p. 160 ° / 5 mm ...
Trang 311
... ester ( I ) is converted by BzCl in C , H , N into chloroviolin Me , ester ( II ) , m.p. 330 ° ( Cu compound , m.p. > 320 ° ) , which is not ( A ) , sol . in alkali . Fractionation of ( II ) with 18 % HCl and esteri- fication of the ...
... ester ( I ) is converted by BzCl in C , H , N into chloroviolin Me , ester ( II ) , m.p. 330 ° ( Cu compound , m.p. > 320 ° ) , which is not ( A ) , sol . in alkali . Fractionation of ( II ) with 18 % HCl and esteri- fication of the ...
Trang 381
... ester is catalytically hydrogenated ( Pd in anhyd . HCO2H at 70- 75 ° ) to coproporphyrin I Me , ester , identified spectroscopically ; the main product is coproglaucobilin ester ( I ) , m.p. 202 ° . The non- homogeneous course of the ...
... ester is catalytically hydrogenated ( Pd in anhyd . HCO2H at 70- 75 ° ) to coproporphyrin I Me , ester , identified spectroscopically ; the main product is coproglaucobilin ester ( I ) , m.p. 202 ° . The non- homogeneous course of the ...
Ấn bản in khác - Xem tất cả
Thuật ngữ và cụm từ thông dụng
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