Efficiently direct addition of HGeCl3 to imine has been investigated,affording excellent yield. The reaction conditions are the key factor for whether the reaction will successfully occur. It has also been found that ...Efficiently direct addition of HGeCl3 to imine has been investigated,affording excellent yield. The reaction conditions are the key factor for whether the reaction will successfully occur. It has also been found that the germatrane is another kind of stable derivative besides its sesquioxide.展开更多
Butanons, 2-pentanone,2-hexanone and cyclohexanone were cyanoethylated,using KOH/HOCH2CH2OCH2 as a catalyst,giving yields of more than 30%.There inorganic acid salts,NaHSO4,KHSO4 and KH2PO4,were employed for the first...Butanons, 2-pentanone,2-hexanone and cyclohexanone were cyanoethylated,using KOH/HOCH2CH2OCH2 as a catalyst,giving yields of more than 30%.There inorganic acid salts,NaHSO4,KHSO4 and KH2PO4,were employed for the first time to catalyze the isomerization of δ-keto nitriles obtained above to correspounding pyrklones.The three catalysts were found to bave significantly high activities and their activities have close relation to their physical properties,especially are in direct proportion to their acidities.展开更多
文摘Efficiently direct addition of HGeCl3 to imine has been investigated,affording excellent yield. The reaction conditions are the key factor for whether the reaction will successfully occur. It has also been found that the germatrane is another kind of stable derivative besides its sesquioxide.
文摘Butanons, 2-pentanone,2-hexanone and cyclohexanone were cyanoethylated,using KOH/HOCH2CH2OCH2 as a catalyst,giving yields of more than 30%.There inorganic acid salts,NaHSO4,KHSO4 and KH2PO4,were employed for the first time to catalyze the isomerization of δ-keto nitriles obtained above to correspounding pyrklones.The three catalysts were found to bave significantly high activities and their activities have close relation to their physical properties,especially are in direct proportion to their acidities.
