Four pyridazinone gluosodes 4 were synthesized by Koenig′s Knorr reaction of 6 (4 halophenyl) 3( 2H ) pyridazinone silver salt 2 with bromoacetylglucose 3.Treatment of 4 with dry ammonia at 0～-5℃ effected a removal...Four pyridazinone gluosodes 4 were synthesized by Koenig′s Knorr reaction of 6 (4 halophenyl) 3( 2H ) pyridazinone silver salt 2 with bromoacetylglucose 3.Treatment of 4 with dry ammonia at 0～-5℃ effected a removal of the acetyl protecting groups to yield compounds 5.When the substituent on the benaene ring was F or Cl ,O glucoside was synthesized principally.However,when the substituent was Br or I ,N glucoside was mainly obtained.Their structures were confirmed by 1H NMR,IR and elemental analysis.展开更多
文摘Four pyridazinone gluosodes 4 were synthesized by Koenig′s Knorr reaction of 6 (4 halophenyl) 3( 2H ) pyridazinone silver salt 2 with bromoacetylglucose 3.Treatment of 4 with dry ammonia at 0～-5℃ effected a removal of the acetyl protecting groups to yield compounds 5.When the substituent on the benaene ring was F or Cl ,O glucoside was synthesized principally.However,when the substituent was Br or I ,N glucoside was mainly obtained.Their structures were confirmed by 1H NMR,IR and elemental analysis.
文摘开展了取代5-(2-卤代苯基)-1 H四唑与炔烃为原料在镍(Ⅱ)盐催化串联反应生成四氮唑[5,1-α]异喹啉衍生物的微波辅助合成研究。结果表明:相同反应时间,在镍催化微波辅助条件下,生成四氮唑[5,1-α]异喹啉衍生物的效率较常规加热条件下增强。一系列四氮唑[5,1-α]异喹啉衍生物被高效地合成出来,最高产率达到88%。产物结构经1H NMR、13 C NMR及MS得到确证。该方法具有产率高、操作简单、环境友好等优点。
