N,N-二甲基-1,3-丙二胺(1)与丙烯酸甲酯经Michael加成反应制得N,N-二甲基-N'-甲氧酰丙基-1,3-丙二胺(2);2经胺基保护、季铵盐化及水解反应合成了一种新型的甜菜碱两性表面活性剂(6),其结构经1H NMR,IR和ESI-MS表征。通过电导率法测...N,N-二甲基-1,3-丙二胺(1)与丙烯酸甲酯经Michael加成反应制得N,N-二甲基-N'-甲氧酰丙基-1,3-丙二胺(2);2经胺基保护、季铵盐化及水解反应合成了一种新型的甜菜碱两性表面活性剂(6),其结构经1H NMR,IR和ESI-MS表征。通过电导率法测得6的CMC为1.48×10-4mol·L-1,滴体积法测得γCMC为39.99 m N·m-1,Krafft点小于0℃。乳化与泡沫性能研究结果表明:6具有较好的表面活性,且乳化性和泡沫性能优良。展开更多
Differential heat of absorption of CO_2 in aqueous solutions of N,N-diethylethanolamine(DEEA) and activated DEEA solutions up to a total concentration of 2 mol·L^(-1) was measured as a function of CO_2 loading at...Differential heat of absorption of CO_2 in aqueous solutions of N,N-diethylethanolamine(DEEA) and activated DEEA solutions up to a total concentration of 2 mol·L^(-1) was measured as a function of CO_2 loading at 313.15 K using a reaction calorimeter. In order to analyze the performance of N-methyl-1,3-propanediamine(MAPA)as an activator, DEEA blended solutions containing 0.05, 0.1 and 0.2 mol·L^(-1) MAPA were studied. The heat of CO_2 absorption in single DEEA solutions was unaffected by changing the DEEA concentration in the range of(0.5–2) mol·L^(-1). On the other hand, increasing the concentration of MAPA in aqueous amine mixtures of(DEEA + MAPA) raised the heat of absorption.展开更多
The title compound, N,N＇-bis-[3-chloro-5-S-（l-menthyloxy）-2（5H）-4-furanon-yl]- propane-l,3-diamine （C31H48Cl2N2O6, Mr = 615.61）, has been synthesized and characterized by IR, 1H NMR, MS, elemental analysis and ...The title compound, N,N＇-bis-[3-chloro-5-S-（l-menthyloxy）-2（5H）-4-furanon-yl]- propane-l,3-diamine （C31H48Cl2N2O6, Mr = 615.61）, has been synthesized and characterized by IR, 1H NMR, MS, elemental analysis and single-crystal X-ray diffraction. The crystal crystallizes in the monoclinic system, space group C2 with a = 16.1091（4）, b = 11.1880（3）, c = 19.2854（5） A, β = 106.297（2）°, V = 3336.12（15） A3, Z = 4, Dc = 1.226 mg/m3,μ = 0.237 mm^-1, F（000） = 1320, the final R = 0.0531 and wR = 0.0700 for 2760 observed reflections （I 〉 2σ（I））. X-ray analysis reveals that the title compound possesses four rings： two chiral five-membered furanone rings and two six-membered cyclohexane rings with chair conformation, containing eight chiral centers： C2（S）, C3（R）, C5（R）, C10（S）, C18（S）, C21（R）, C22（S） and C25（R）. The structure is stabilized by N-H…O hydrogen bonding interaction.展开更多
采用尿素和N,N-二甲基-1,3-丙二胺在常压下加热反应合成了1,3-双[3-(二甲胺基)丙基]脲(DPU),考察了反应温度、反应时间对DPU产率和粘度的影响,将不同条件下合成的DPU与二氯乙醚反应生成二氨基脲聚合物(PUB),并与PUB对照品进行比较。研...采用尿素和N,N-二甲基-1,3-丙二胺在常压下加热反应合成了1,3-双[3-(二甲胺基)丙基]脲(DPU),考察了反应温度、反应时间对DPU产率和粘度的影响,将不同条件下合成的DPU与二氯乙醚反应生成二氨基脲聚合物(PUB),并与PUB对照品进行比较。研究表明,在反应温度140℃,反应时间6 h条件下合成的DPU产率为91.8%,粘度290 c P。此条件下合成的DPU与二氯乙醚反应生成的PUB的色泽和粘度与对照品最接近。展开更多
文摘N,N-二甲基-1,3-丙二胺(1)与丙烯酸甲酯经Michael加成反应制得N,N-二甲基-N'-甲氧酰丙基-1,3-丙二胺(2);2经胺基保护、季铵盐化及水解反应合成了一种新型的甜菜碱两性表面活性剂(6),其结构经1H NMR,IR和ESI-MS表征。通过电导率法测得6的CMC为1.48×10-4mol·L-1,滴体积法测得γCMC为39.99 m N·m-1,Krafft点小于0℃。乳化与泡沫性能研究结果表明:6具有较好的表面活性,且乳化性和泡沫性能优良。
文摘Differential heat of absorption of CO_2 in aqueous solutions of N,N-diethylethanolamine(DEEA) and activated DEEA solutions up to a total concentration of 2 mol·L^(-1) was measured as a function of CO_2 loading at 313.15 K using a reaction calorimeter. In order to analyze the performance of N-methyl-1,3-propanediamine(MAPA)as an activator, DEEA blended solutions containing 0.05, 0.1 and 0.2 mol·L^(-1) MAPA were studied. The heat of CO_2 absorption in single DEEA solutions was unaffected by changing the DEEA concentration in the range of(0.5–2) mol·L^(-1). On the other hand, increasing the concentration of MAPA in aqueous amine mixtures of(DEEA + MAPA) raised the heat of absorption.
基金Supported by the National Natural Science Foundation of China (No. 20772035)the Natural Science Foundation of Guangdong Province (No. 5300082)
文摘The title compound, N,N＇-bis-[3-chloro-5-S-（l-menthyloxy）-2（5H）-4-furanon-yl]- propane-l,3-diamine （C31H48Cl2N2O6, Mr = 615.61）, has been synthesized and characterized by IR, 1H NMR, MS, elemental analysis and single-crystal X-ray diffraction. The crystal crystallizes in the monoclinic system, space group C2 with a = 16.1091（4）, b = 11.1880（3）, c = 19.2854（5） A, β = 106.297（2）°, V = 3336.12（15） A3, Z = 4, Dc = 1.226 mg/m3,μ = 0.237 mm^-1, F（000） = 1320, the final R = 0.0531 and wR = 0.0700 for 2760 observed reflections （I 〉 2σ（I））. X-ray analysis reveals that the title compound possesses four rings： two chiral five-membered furanone rings and two six-membered cyclohexane rings with chair conformation, containing eight chiral centers： C2（S）, C3（R）, C5（R）, C10（S）, C18（S）, C21（R）, C22（S） and C25（R）. The structure is stabilized by N-H…O hydrogen bonding interaction.
文摘采用尿素和N,N-二甲基-1,3-丙二胺在常压下加热反应合成了1,3-双[3-(二甲胺基)丙基]脲(DPU),考察了反应温度、反应时间对DPU产率和粘度的影响,将不同条件下合成的DPU与二氯乙醚反应生成二氨基脲聚合物(PUB),并与PUB对照品进行比较。研究表明,在反应温度140℃,反应时间6 h条件下合成的DPU产率为91.8%,粘度290 c P。此条件下合成的DPU与二氯乙醚反应生成的PUB的色泽和粘度与对照品最接近。
