Aromatic sultones could be obtained by the palladium-catalyzed cyclization reaction of arylsulfonic acids with simple arenes. The reaction proceeds through sulfonic acid group-directed multiple C--H activations and in...Aromatic sultones could be obtained by the palladium-catalyzed cyclization reaction of arylsulfonic acids with simple arenes. The reaction proceeds through sulfonic acid group-directed multiple C--H activations and involves the cleavage of C--H and O--H bonds as well as the formation of C--C and C--O bonds. Our protocol provides a facile access to aromatic sultones.展开更多
N-methyl-N-propylpiperidinium bis(trifluoromethanesulfonyl)imide was synthesized for the application in ionic liquid based electrolytes in lithium ion battery, 10% vinylene carbonate (VC) and 10% 1,3-propane sultone (...N-methyl-N-propylpiperidinium bis(trifluoromethanesulfonyl)imide was synthesized for the application in ionic liquid based electrolytes in lithium ion battery, 10% vinylene carbonate (VC) and 10% 1,3-propane sultone (PS) were added to the electrolyte system respectively as additives to improve the property of solid electrolyte interface and cyclic performance. The results of cyclic voltammetry showed that homogenous and compact solid electrolyte interface film formed on graphite electrode which was detected by observing the morphology of cycled graphite anode. Charging and discharging performance of LiFePO4/Li half cell was tested in the electrolyte with or without additives. The initial specific discharging capacities were increased to 129.4 and 123.0 mA·h/g by the addition of VC and PS, respectively, compared with that of additive-free electrolyte. The discharging retentions were 88.9% and 84.6% in electrolyte containing VC and PS after 10 cycles.展开更多
（1R,2S,3S,4S）-（6-O-Acetyl-1,2-O-isoproplidene-3,5-dideoxy-α-D-glucofuranoso）-1,3,5-trihydro-2,3-oxathiaindene-2,2-dioxide（C11H16O8S,Mr=308.30） was synthesized and structurally characterized by NMR,MS and single...（1R,2S,3S,4S）-（6-O-Acetyl-1,2-O-isoproplidene-3,5-dideoxy-α-D-glucofuranoso）-1,3,5-trihydro-2,3-oxathiaindene-2,2-dioxide（C11H16O8S,Mr=308.30） was synthesized and structurally characterized by NMR,MS and single-crystal X-ray diffraction.It belongs to the triclinic system,space group P1 with a=7.0836（14）,b=10.832（2）,c=14.895（3）,α=96.01（3）,β=98.85（3）,γ=108.59（3）o,V=1055.8（4）3,Z=3,Dc=1.455g/cm3,F（000）=486,μ=0.264mm-1,the final R=0.0360 and wR=0.0712.It is a tricyclic sultone derivative composed of three five-membered rings.展开更多
文摘Aromatic sultones could be obtained by the palladium-catalyzed cyclization reaction of arylsulfonic acids with simple arenes. The reaction proceeds through sulfonic acid group-directed multiple C--H activations and involves the cleavage of C--H and O--H bonds as well as the formation of C--C and C--O bonds. Our protocol provides a facile access to aromatic sultones.
基金Supported by National Natural Science Foundation of China (No.20976174)Open-end Fund of National Key Laboratory of Multiphase Complex Systems (No.MPCS-2011-D-06)
文摘N-methyl-N-propylpiperidinium bis(trifluoromethanesulfonyl)imide was synthesized for the application in ionic liquid based electrolytes in lithium ion battery, 10% vinylene carbonate (VC) and 10% 1,3-propane sultone (PS) were added to the electrolyte system respectively as additives to improve the property of solid electrolyte interface and cyclic performance. The results of cyclic voltammetry showed that homogenous and compact solid electrolyte interface film formed on graphite electrode which was detected by observing the morphology of cycled graphite anode. Charging and discharging performance of LiFePO4/Li half cell was tested in the electrolyte with or without additives. The initial specific discharging capacities were increased to 129.4 and 123.0 mA·h/g by the addition of VC and PS, respectively, compared with that of additive-free electrolyte. The discharging retentions were 88.9% and 84.6% in electrolyte containing VC and PS after 10 cycles.
基金supported by the National Natural Science Foundation of China (NSFC#30701043)
文摘（1R,2S,3S,4S）-（6-O-Acetyl-1,2-O-isoproplidene-3,5-dideoxy-α-D-glucofuranoso）-1,3,5-trihydro-2,3-oxathiaindene-2,2-dioxide（C11H16O8S,Mr=308.30） was synthesized and structurally characterized by NMR,MS and single-crystal X-ray diffraction.It belongs to the triclinic system,space group P1 with a=7.0836（14）,b=10.832（2）,c=14.895（3）,α=96.01（3）,β=98.85（3）,γ=108.59（3）o,V=1055.8（4）3,Z=3,Dc=1.455g/cm3,F（000）=486,μ=0.264mm-1,the final R=0.0360 and wR=0.0712.It is a tricyclic sultone derivative composed of three five-membered rings.
