N-[4-(间甲基苯甲酰基哌嗪)乙酰基]-N-甲基-3-(1-萘氧基)-3-(2-噻吩基)-丙胺的合成

以N-甲基-3-(1-萘氧基)-3-(2-噻吩基)-丙胺(Duloxetine)为原料,合成了标题化合物.中间体和产物的结构经 ~1HNMR、IR和质谱表征.     

苯乙烯/γ-甲基丙烯酰氧丙基三甲氧基硅烷乳液共聚动力学研究

以苯乙烯（St）、γ-甲基丙烯酰氧丙基三甲氧基硅烷（TMSPMA）为单体,十二烷基硫酸钠和辛基酚聚氧乙烯醚为复合乳化剂,通过乳液聚合法制备了St-TMSPMA共聚物。用傅里叶变换红外光谱仪对共聚物进行了表征,1090 cm-1处Si－O－Si键的吸收峰和1723 cm-1处羰基的伸缩振动吸收峰表明TMSPMA与St发生了共聚反应;并研究了反应温度、引发剂浓度、乳化剂浓度和TMSPMA浓度对乳液共聚反应速率的影响,结果表明,升高反应温度、增大引发剂或乳化剂浓度以及降低TMSPMA浓度都可以提高聚合反应速率。     

甲基丙烯酰胺丙基二甲基胺的合成与应用述评

介绍了甲基丙烯酰胺丙基二甲基胺（DMAPMA）的合成工艺路线,重点阐述了该产品在水处理行业、日化行业、造纸加工业、医药行业等中的实际应用.     

Immobilization of horseradish peroxidase on self-assembled (3-mercaptopropyl)trimethoxysilane film: Characterization, direct electrochemistry, redox thermodynamics and biosensing

Highly organized (3-mercaptopropyl)trimethoxysilane (3-MPT) films have been prepared via self-assembled coupled with sol–gel linking technology. Horseradish peroxidase (HRP) is successfully immobilized onto the densely packed three-dimensional (3D) 3-MPT network and the direct electrochemistry of HRP is achieved without any electron mediators or promoters. Redox thermodynamics of HRP on the 3-MPT films, which is obtained from the temperature dependence of the reduction potential, suggests that the positive shift of redox potentials of HRP at the interface of 3-MPT originates from the solvent reorganization effects and conformational change of the polypeptide chain of HRP. Based on the direct electrochemistry and electrocatalytic ability of HRP, a sensitive third-generation amperometric H₂O₂ biosensor is developed with two linear dependence ranges of 5.0 × 10⁻⁷ to 1.0 × 10⁻⁴ and 1.0 × 10⁻⁴ to 2.0 × 10⁻² mol L⁻¹.     

5-[2-(乙硫基)丙基]-1,3-环己二酮的合成工艺研究

研究优化了合成烯草酮、烯禾定以及cloproxydim等环己烯酮类除草剂的重要中间体5-[2-(乙硫基)丙基]-1,3-环己二酮的合成方法.首先,巴豆醛与乙硫醇在三乙胺中高收率制得3-乙硫基丁醛,然后以乙酰乙酸甲酯为原料,通过碱水解、与3-乙硫基丁醛缩和、脱水三步反应合成6-乙硫基庚烷-3-烯-2-酮,接着6-乙硫基庚烷-3-烯-2-酮与丙二酸二甲酯经Michael加成和Claisen缩合,再通过皂化和脱羧反应生成目标化合物5-[2-(乙硫基)丙基]-1,3-环己二酮,主要中间产物以及目标产品均与标准品对照,经液质联用确认.     

St/FR-2共聚体系竞聚率

通过对苯乙烯/双(2,3-二溴丙基)反丁烯二酸酯(St/FR-2)共聚体系的研究,用核磁共振氢谱方法分析了共聚物组成,运用Fineman-Ross的理论进行数据处理,得到了90℃下,FR-2与St的竞聚率分别为0.026 9±0.000 3和0.120 0±0.057 7.     

(3-苯甲酰胺基-3-甲氧羰基)丙基甲次膦酸-2-氯乙基酯的合成

研究了含有甲次膦酸酯的烯烃氢甲酰化反应及酰胺化、羰基化反应。在烯烃的氢甲酰化反应中 ,当溶剂为甲醇 ,催化剂为Co2 (CO) 8,可获得收率为 96 %的 3,3 二甲氧基丙基甲次膦酸 2 氯乙基酯 ,进一步反应可获得 (3 苯甲酰胺基 3 甲氧基羰基 )丙基甲次膦酸 2 氯乙基酯收率达 85 %。     

Organic-skinned inorganic nanoparticles: surface-confined polymerization of 6-(3-thienyl)hexanoic acid bound to nanocrystalline TiO2

There are many practical difficulties in direct adsorption of polymers onto nanocrystalline inorganic oxide surface such as Al2O3 and TiO2 mainly due to the insolubility of polymers in solvents or polymer agglomeration during adsorption process. As an alternative approach to the direct polymer adsorption, we propose surface-bound polymerization of pre-adsorbed monomers. 6-(3-Thienyl)hexanoic acid (THA) was used as a monomer for poly[3-(5-carboxypentyl)thiophene-2,5-diyl] (PTHA). PTHA-coated nanocrystalline TiO2/FTO glass electrodes were prepared by immersing THA-adsorbed electrodes in FeCl3 oxidant solution. Characterization by ultraviolet/visible/infrared spectroscopy and thermal analysis showed that the monolayer of regiorandom-structured PTHA was successfully formed from intermolecular bonding between neighbored THA surface-bound to TiO2. The anchoring functional groups (-COOH) of the surface-crawling PTHA were completely utilized for strong bonding to the surface of TiO2.     

(R)-9-[2-(二乙氧基磷酰甲氧)丙基]腺嘌呤合成过程中催化剂的优选

目的:(R)-9-[2-(二乙氧基磷酰甲氧)丙基]腺嘌呤(3)合成过程中的催化剂优选。方法:以亚磷酸二乙酯和多聚甲醛经缩合、酯化得到对甲苯磺酸羟甲基磷酸二乙基酯(1)。另以(R)-1,2-亚丙基碳酸酯与腺嘌呤反应得到9-(2-羟丙基)腺嘌呤(2),在(1)与(2)缩合得到(3)的反应中对四种催化剂进行实验对比。结果:优选催化剂为叔丁醇锂的无水DMF溶液,降低成本和污染。结论:合成得到(3),产率提高到40.5%。     

(S)-2-(ethyl propionate)-(O-ethyl xanthate)- and (S)-2-(Ethyl isobutyrate)-(O-ethyl xanthate)-mediated RAFT polymerization of vinyl acetate

(S)-2-(Ethyl propionate)-(O-ethyl xanthate) (X1) and (S)-2-(Ethyl isobutyrate)-(O-ethyl xanthate) (X2) were used as the reversible addition-fragmentation chain transfer (RAFT) agents for the radical polymerization of vinyl acetate (VAc). The former showed the better chain transfer ability in the polymerization at 60°C. Kinetic study with both RAFT agents showed pseudo-first order kinetics up to around 85% monomer conversion. Molecular weight of the resulting polymer increased linearly with increase in the monomer conversion up to around 85%. The observed molecular weights calculated from ¹H-NMR spectrum [M_n(NMR)] are close to the corresponding theoretical molecular weights [M_n(theor)]. The corresponding polydispersity index (PDI) of the resulting polymers remained almost constant at around 1.2 up to ∼ 65% monomer conversion and then increased gradually with the further increase in the monomer conversion. Chain-end analysis of the resulting polymers by ¹H-NMR showed clearly that polymerization started with the radical forming out of the xanthate mediator. The negligible homo-chain extension and the hetero-chain extension involving synthesis of poly(VAc)-b-poly(NVP) diblock copolymer were occurred. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012     

铕（III）-1-（氯苯基）-3-（2-羟基苯基）-丙二酮类配合物的合成与荧光性质

合成了1-(邻氯苯基)-3-(2-羟基苯基)-丙二酮(L1)、1-(间氯苯基)-3-(2-羟基苯基)-丙二酮(L2)和1-(对氯苯基)-3-(2-羟基苯基)-丙二酮(L3)3种配体,并将此3种配体分别与 Eu(III)反应生成3种新的稀土配合物。运用元素分析、红外光谱与荧光光谱等手段对配合物进行了表征。结果表明：3种配合物的组成分别为 Eu(L1)3·2H2O、Eu(L2)3·2H2O 和 Eu(L3)3·2H2O。荧光光谱显示,3种配合物的配体均能将吸收的能量有效地传递给三价铕离子,从而使配合物发射出强的铕离子的特征荧光。在3种配合物中,Eu(L1)3·2H2O 的荧光强度远大于 Eu(L2)3·2H2O 和 Eu(L3)3·2H2O 的荧光强度,这说明配体 L1与 Eu(III)离子的能级匹配较好,能量传递效率较高。     

5－（3，5－二溴－2－吡啶基）－1－（2－羟基－5－磺苯基）－3－（2－羟基苯基）甲的合成及其与铜显色反应的研究

介绍了显色剂５－（３，５－二溴－２－吡啶基）－１－（２－羟基－５－磺苯基）－３－（２－羟基苯基）甲（ＢＰＨＰＳ）的合成。详细研究了试剂与铜的显色反应，其灵敏度较高，摩尔吸光系数ε为２．４６×１０４。采用掩蔽方法，能显著提高体系的选择性。用拟定的方法测定了铜矿中的铜，结果令人满意。     

硝基亚苄基乙酰乙酸乙酯合成的理论研究

采用密度泛函理论方法优化计算了乙酰乙酸乙酯、间硝基苯甲醛和2-（3-硝基亚苄基）乙酰乙酸乙酯分子结构,分析了电荷布局分布和前线分子轨道,探讨了各物质的分子热力学性质和反应平衡常数。在此基础上用含时密度泛函方法（TD-DFT）计算了分子吸收光谱。计算结果表明,在298～1 000 K温度范围内,用乙酰乙酸乙酯和间硝基苯甲醛合成医药中间体2-（3-硝基亚苄基）乙酰乙酸乙酯是一个放热反应,且吉布斯自由能为负,反应在温和的条件（298～400 K）下就易自发进行,反应平衡常数较大,还可用紫外光谱来监测反应进程。     

新型硅烷偶联剂双-[-3 (三乙氧基硅 )丙基 ]-二硫化物的合成

由二硫化钠和γ 氯丙基三乙氧基硅烷合成双 [3 (三乙氧基硅)丙基] 二硫化物硅烷偶联剂,原料易得,反应条件温和,在温度为80℃,回流1.5h,收率达95%,成本低。该硅烷偶联剂应用于多种天然及合成橡胶的补强,偶联效果好。     

1-(2-氯苯基)-2-(4-氟苯基)-3-溴-1-丙烯的合成

1-(2-氯苯基)-2-(4-氟苯基)-3-溴-1-丙烯(2)是氟环唑的关键中间体。以1,2-二氯乙烷和水为溶剂,1-(2-氯苯基)-2-(4-氟苯基)-1-丙烯(1)在氢溴酸/双氧水体系中发生α-溴代反应得到该化合物。通过使用氢溴酸/双氧水代替溴素或N-溴代丁二酰亚胺,提高了溴的利用率及产品的收率,避免了烯烃的加成,减少了副反应的发生,减少了三废。通过实验获得了反应的优惠条件:二氯乙烷和水为溶剂,回流反应,n(1)∶n(HBr)∶n(H2O2)=1∶1.1∶2.5,氢溴酸和双氧水的滴加时间为6 h,在上述反应条件下,反应收率为90.6%,选择性90.6%。     

(R)-(+)-N,N-二甲基-3-羟基-3-(2-噻吩基)丙胺的消旋

为提高抗抑郁药度洛西汀合成收率,降低生产成本,研究了中间体拆分副产物(R)-(+)-N,N-二甲基-3-羟基-3-(2-噻吩基)丙胺在不同有机羧酸溶剂、反应温度、反应时间、共溶剂剂量下的消旋化反应。实验表明,以乙酸作溶剂,温度90℃,x(水杨醛)=0.1作共溶剂,反应8 h,最后消旋率达到100%,收率为70%。在同样实验条件下将反应投料量扩大至200 g,平均消旋率达99.2%,平均收率达90.8%,所得消旋体可以重新用于光学拆分及合成产物度洛西汀。     

1-(4-硝基苯)-3-(5-氯-2-吡啶)-三氮烯对银的显色反应及研究

合成了1-(4-硝基苯)-3-(5-氯-2-吡啶)三氮烯(NPCPDT),并研究了NPCPDT与银的显色反应。在Na2B4O7NaOH缓冲溶液(pH10.0)介质中,在TritonX100存在下,NPCPDT与Ag生成1∶1配合物。配合物在470nm处有最大吸收峰,表观摩尔吸光系数ε为1.46×105L·mol-1·cm-1,Ag含量在0～12μg/25mL范围内符合比耳定律。方法用于回收定影液中银的测定,结果满意。     

(R)-3-(3-氟-4-吗啉苯基)-2-氧-5-(口恶)唑烷基甲醇的合成

以3,4-二氟硝基苯为原料,与吗啉在二异丙基乙胺中反应4 h得到3-氟-4-吗啉硝基苯(Ⅰ),在w(Pd)=10%催化下,Ⅰ与甲酸铵在V(THF) V(甲醇)＝1 4中反应6 h,得3-氟-4-吗啉苯胺(Ⅱ),Ⅱ与光气在通入干燥HCl气体下反应得3-氟-4-吗啉异氰酸苯酯(Ⅲ),最后在无水LiBr和n-Bu3PO催化下,Ⅲ与(R)-丁酸缩水甘油酯在二甲苯中反应2 h,所得产物在甲醇钠催化下,与甲醇反应3 h,合成了(R)-3-(3-氟-4-吗啉苯基)-2-氧-5-(口恶)唑烷基甲醇(Ⅳ),总收率35.8%.     

1-(3-氨基苯基)-3-(4-氨基苯基)-2-丙烯-1-酮的合成

以对乙酰氨基苯甲醛、间乙酰氨基苯乙酮为原料经两步反应合成具有光敏性能的1 (3 氨基苯基) 3 (4 氨基苯基) 2 丙烯 1 酮。通过优化实验得到最佳的合成工艺条件为:对乙酰氨基苯甲醛、间乙酰氨基苯乙酮在温度为0℃下,以乙醇为溶剂、氢氧化钠为催化剂,进行羟醛缩合反应3h。分离提纯后,加入盐酸溶液在100℃下水解3h,产物经重结晶提纯。总收率达到61 9%,较1998年的文献[6]提高39 3%。并对产物的结构进行了表征。     

Synthesis of Sulfated Sodium Salts of 1-Alkylamino-3-alkyloxy-2-propanols and N,N-Di-(2-hydroxy-3-alkyloxy propyl) Alkylamines as Potential Surfactants

1-Alkylamino-3-alkyloxy-2-propanols, V (a–g) and N,N-di-(2-hydroxy-3-alkyloxy propyl) alkylamines, VI (a–g) were prepared with the same chain length both for alkyl amino and alkyloxy groups by condensation of alkyl glycidyl ethers with long chain alkylamines by employing thermal and microwave-assisted methods. All the products were characterized by ¹H-NMR, IR and fast atom bombardment mass spectrometry studies. These compounds were further sulfated and evaluated as their sodium salts for surfactant properties namely surface tension, critical micelle concentration, emulsifying property, wetting, foaming power and calcium tolerance. Sulfated 1-dodecylamino-3-dodecyloxy-2-propanol, VII c and sulfated N,N-di-(2-hydroxy-3-dodecyloxy propyl) dodecylamine, VIII c were found to exhibit superior surfactant properties among the respective series of monomers and dimers.