British Abstracts: Pure chemistry and physiology. ser. A1941 |
Từ bên trong sách
Kết quả 1-3 trong 91
Trang 169
... obtained with difficulty from ( I ) . 4 - Acetoxy- 2 - naphthoyl chloride ( prep . by PC15 ) , m.p. 96-98 ° , remelting at 99-0-99-5 ° , with H. - Pd - BaSO , and a little S - quinoline in boiling xylene gives 4 - acetoxy - 2 ...
... obtained with difficulty from ( I ) . 4 - Acetoxy- 2 - naphthoyl chloride ( prep . by PC15 ) , m.p. 96-98 ° , remelting at 99-0-99-5 ° , with H. - Pd - BaSO , and a little S - quinoline in boiling xylene gives 4 - acetoxy - 2 ...
Trang 227
... obtained after 5-10 min . , but after 36 hr . only a trace of ( A ) and 75 % of RCN are formed . When the HCl formed in the reaction ( without HCl added ) is removed by a strong base ( NEt , or NPra3 ) , only RCN is obtained . Reaction ...
... obtained after 5-10 min . , but after 36 hr . only a trace of ( A ) and 75 % of RCN are formed . When the HCl formed in the reaction ( without HCl added ) is removed by a strong base ( NEt , or NPra3 ) , only RCN is obtained . Reaction ...
Trang 371
... obtained in 42 % yield by distilling B - 2- furylacrylic acid at 250-275 ° . A hard , insol . , infusible polymeride of ( I ) is obtained by heating at 100 ° with 1 % of HCI , SnCl , SiCl ,, SbCl ,, or AcCÍ , or at 175 ° with 5 % of ...
... obtained in 42 % yield by distilling B - 2- furylacrylic acid at 250-275 ° . A hard , insol . , infusible polymeride of ( I ) is obtained by heating at 100 ° with 1 % of HCI , SnCl , SiCl ,, SbCl ,, or AcCÍ , or at 175 ° with 5 % of ...
Nội dung
General Physical and Inorganic Chemistry I II Subatomics | 1 |
Molecular Structure | 3 |
Crystal Structure | 5 |
39 phần khác không được hiển thị
Ấn bản in khác - Xem tất cả
Thuật ngữ và cụm từ thông dụng
absorption Acad acid activation energy activity adsorbed adsorption alloys Amer analysis approx ation atoms bands calc catalyst Chem chemical CO₂ coeff colloidal compounds Compt concn const containing crystal curves decomp decreases deposits described determined deuterons diffraction diffusion discussed effect electrolytes electron emission energy entropy equation equilibrium EtOH ferromagnetic films formation formed glass H₂ H₂O heat hydrogen hysteresis increases indicate Instr intensity ionisation ions Kolloid lattice layer liquid magnetic Me.v measured mesons mesotrons metals method minerals mixtures monoclinic neutrons observed obtained oxidation particles PhOH Phys Physical Chem Physical Rev polarisation potential presence pressure Proc protons quartz radioactive reaction Russ salts Shurn solid solid solutions sols solubility solutions solvent spectra spectrum structure surface temp theory thermal titration unit cell vals vapour velocity viscosity X-ray