As a synergistic anti tumor agent, N solanesyl N,N ′ bis(3,4 dimethoxybenzyl)ethylenediamine(5) was synthesized starting from vanillin and solanesol. Methylation of vanillin gave veratradehyde(1), which after couplin...As a synergistic anti tumor agent, N solanesyl N,N ′ bis(3,4 dimethoxybenzyl)ethylenediamine(5) was synthesized starting from vanillin and solanesol. Methylation of vanillin gave veratradehyde(1), which after coupling with ethylenediamine was then catalytically reduced to N,N ′ bis(3,4 dimethoxybenzyl)ethylenediamine(3), which was coupled with solanesol bromide (4) to give (5). The processes of synthesis of (3) and separation of (5) have been improved with total reaction yield being increased. The structures of the compounds were confirmed by IR, 1 H NMR, MS and elemental analysis.展开更多
The extraction behavior of N,N,N’,N’-tetrabutylglutaramide（TBGA）employing cyclohexane as diluent toward La（Ⅲ）,Pr（Ⅲ）,Gd（Ⅲ）and Er（Ⅲ） investigated.The effect of the concentrations of nitric acid,lithium n...The extraction behavior of N,N,N’,N’-tetrabutylglutaramide（TBGA）employing cyclohexane as diluent toward La（Ⅲ）,Pr（Ⅲ）,Gd（Ⅲ）and Er（Ⅲ） investigated.The effect of the concentrations of nitric acid,lithium nitrate and extractant and also the temperature on the extraction distribution ratio was studied.The stoichiometry of the extracted species was Found to be M（NO3）3·3TBGA（M=La,Pr,Gd,Er）.The extraction mechanism was also discussed and the values of the enthalpy of extraction reaction was calculated.展开更多
文摘As a synergistic anti tumor agent, N solanesyl N,N ′ bis(3,4 dimethoxybenzyl)ethylenediamine(5) was synthesized starting from vanillin and solanesol. Methylation of vanillin gave veratradehyde(1), which after coupling with ethylenediamine was then catalytically reduced to N,N ′ bis(3,4 dimethoxybenzyl)ethylenediamine(3), which was coupled with solanesol bromide (4) to give (5). The processes of synthesis of (3) and separation of (5) have been improved with total reaction yield being increased. The structures of the compounds were confirmed by IR, 1 H NMR, MS and elemental analysis.
文摘The extraction behavior of N,N,N’,N’-tetrabutylglutaramide（TBGA）employing cyclohexane as diluent toward La（Ⅲ）,Pr（Ⅲ）,Gd（Ⅲ）and Er（Ⅲ） investigated.The effect of the concentrations of nitric acid,lithium nitrate and extractant and also the temperature on the extraction distribution ratio was studied.The stoichiometry of the extracted species was Found to be M（NO3）3·3TBGA（M=La,Pr,Gd,Er）.The extraction mechanism was also discussed and the values of the enthalpy of extraction reaction was calculated.
