Quantitative determination of tetranitro-pentaerythritol(PETN) was exploded by using HPLC-ESI MS.PETN was separated on the C18 column through reversed-phase high performance liquid chromatography with methanol-water(...Quantitative determination of tetranitro-pentaerythritol(PETN) was exploded by using HPLC-ESI MS.PETN was separated on the C18 column through reversed-phase high performance liquid chromatography with methanol-water(70 ∶30,by volume) as the mobile phase at a flow rate of 0.2 mL/min.Ultraviolet detection was performed at 225 nm.The base peak of PETN was adduct ion,[M-H+NO3]-.The calibration curve showed a linear range from 1.25 to 200 mg/L with correlation coefficient of 0.999 2.The limit of detection was 0.1 mg/L.The relative standard deviations(RSD) were 1.98%.The recoveries of PETN were range of 98%-100%.展开更多
Dendrimers are the subject of intense attention recently because of their anticipated potentialities and the peculiar structural properties.A novel synthetic route for the preparation of functionalized dendrons built ...Dendrimers are the subject of intense attention recently because of their anticipated potentialities and the peculiar structural properties.A novel synthetic route for the preparation of functionalized dendrons built on the 1,3,5-benzenetricarboxaldehyde core and endowed with a periphery of pentaerythritol groups has been developed.1,3,5-Tri（2,6-dioxa-4,4-dihydroxymethyl cyclohexyl） benzene（1） was synthesized by the condensation of 1,3,5-benzenetricarboxaldehyde with pentaerythritol in the presence of hot CHCl3 and p-methyl benzene sulfonic acid with 55% yield.By turning 1,3,5-benzenetricarboxaldehyde into its trioxime,it was protected to decrease the cross-linked reaction with compound 1 both including many groups.The reaction of compound 1 with 1,3,5-benzenetricarboxaldehyde trioxime and pentaerythritol afforded 1,3,5-tri{3-[2,4,8,10 -tetra-oxa-9(3,5-di（2,6-dioxa-4,4-dihydroxymethylcyclohexyl） phenyl]spiro\undecyl}benzene（2） by using I2 as the catalyst,and the yield was 25.2%.Product 2 and its intermediates were identified by IR,1H NMR,MS spectra and elemental analysis.展开更多
文摘Quantitative determination of tetranitro-pentaerythritol(PETN) was exploded by using HPLC-ESI MS.PETN was separated on the C18 column through reversed-phase high performance liquid chromatography with methanol-water(70 ∶30,by volume) as the mobile phase at a flow rate of 0.2 mL/min.Ultraviolet detection was performed at 225 nm.The base peak of PETN was adduct ion,[M-H+NO3]-.The calibration curve showed a linear range from 1.25 to 200 mg/L with correlation coefficient of 0.999 2.The limit of detection was 0.1 mg/L.The relative standard deviations(RSD) were 1.98%.The recoveries of PETN were range of 98%-100%.
文摘Dendrimers are the subject of intense attention recently because of their anticipated potentialities and the peculiar structural properties.A novel synthetic route for the preparation of functionalized dendrons built on the 1,3,5-benzenetricarboxaldehyde core and endowed with a periphery of pentaerythritol groups has been developed.1,3,5-Tri（2,6-dioxa-4,4-dihydroxymethyl cyclohexyl） benzene（1） was synthesized by the condensation of 1,3,5-benzenetricarboxaldehyde with pentaerythritol in the presence of hot CHCl3 and p-methyl benzene sulfonic acid with 55% yield.By turning 1,3,5-benzenetricarboxaldehyde into its trioxime,it was protected to decrease the cross-linked reaction with compound 1 both including many groups.The reaction of compound 1 with 1,3,5-benzenetricarboxaldehyde trioxime and pentaerythritol afforded 1,3,5-tri{3-[2,4,8,10 -tetra-oxa-9(3,5-di（2,6-dioxa-4,4-dihydroxymethylcyclohexyl） phenyl]spiro\undecyl}benzene（2） by using I2 as the catalyst,and the yield was 25.2%.Product 2 and its intermediates were identified by IR,1H NMR,MS spectra and elemental analysis.
