The isothermal mutual solubility and phase relation of MgSO 4-Li 2SO 4-C 2H 5OH-H 2O system at 25 ℃ have been investigated by using a homemade micro-equilibrium and sampling apparatus. The demixing phenomenon of the ...The isothermal mutual solubility and phase relation of MgSO 4-Li 2SO 4-C 2H 5OH-H 2O system at 25 ℃ have been investigated by using a homemade micro-equilibrium and sampling apparatus. The demixing phenomenon of the system′s at below room temperature was observed. The precise demixing composition and composition of double-saturated point of the system have been determined. A unique effect, namely additive property between MgSO 4 and Li 2SO 4 has been observed and explained in terms of "pseudo-ternary system" concept. An empirical formula has been worked out to correlate the mutual solubility.展开更多
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The isothermal mutual solubility and phase relation of MgSO 4-Li 2SO 4-C 2H 5OH-H 2O system at 25 ℃ have been investigated by using a homemade micro-equilibrium and sampling apparatus. The demixing phenomenon of the system′s at below room temperature was observed. The precise demixing composition and composition of double-saturated point of the system have been determined. A unique effect, namely additive property between MgSO 4 and Li 2SO 4 has been observed and explained in terms of "pseudo-ternary system" concept. An empirical formula has been worked out to correlate the mutual solubility.
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.
基金supported by the Program for Changjiang Scholars and Innovative Research Team in University(IRT1061)the Program for Innovative Research Team in Science and Technology in University of Henan Province(15IRTSTHN003)+1 种基金the Young Backbone Teachers Training Fund of the Education Department of Henan Province(2013GGJS-059)Henan Normal University(2011-8)