肉桂酸

2 Condensation of ketones with ethyl cyanoacetate catalysed by ammonium acetate-acetic acid results ethyl alkylidene cL-cyanoacetate in 3 l?.-89% yield under ultrasound irradiation at 4l-450C within

在超声波作用下，以芳香醛和丙二酸为原料，以膨胀石墨作催化剂，合成多种肉桂酸，于41～43℃反应3.5-10小时，产率65-97％。

Phenylalanine can be deaminated to cinnamic acid, required in the synthesis of lignin.

苯丙氨酸可脱去氨基形成木质素合成所必需的肉桂酸。

Objective: To use p-toluene sulfonic acid as the catalyst for the esterification reaction of cinnamic acid with isoamyl alcohol in liquid phase.

目的：以对甲苯磺酸为催化剂对肉桂酸与异戊醇的液相酯化反应进行研究。

A new method for the simultaneous determination of salicylic acid, cinnamic acid, ferulic acid and vanillic acid by stacking-non-aquous-capillary electrophoresis has been proposed.

建立了同时分离测定水杨酸、肉桂酸、阿魏酸和香草酸的电堆集富集-非水毛细管电泳的新方法。

Results: The optimum conditions were found to be as follows: the molar ratio of isoamyl alcohol to cinnamic acid was ...

对甲苯磺酸是合成肉桂酸异戊酯的良好催化剂，具有实际应用价值，该实验合成工艺简单，酯收率较高。

At present,the synthesis of lignin that is not only a means,but Phenylalanine AmmoniaLyaseand Cinnamic acid 4-Hydroxylase(C4H),such as enzyme in the synthesis played a very important role.

目前认为木质素的合成途径不只一条，但苯丙氨酸解氨酶和肉桂酸4-羟基化酶(C4H)等酶在合成中起到了十分重要的作用。

The UV and IR spectroscopic studies of the monomer films showed that the photoreaction ratio of monomer (about 50%) was higher than the corresponding photosensitive polymer (about 10%, PVCi). The polarized IR spectra proved that obvious anisotropic absorption was displayed in the irradiated photosensitive film. With polarizing microscopy method, we found that these kinds of photoalignment films exhibited good alignment ability, and the stability of the photoalignment film could reach about 100℃. 2 A photosensitive self-assembled monolayer was fabricated that contained photo-cycloadditable groups, such as, coumarin and cinnamate. The reaction process were detected by contact angle method because the IR absorption of monolayer was very weak. The photosensitive self-assembled monolayer promote uniform alignment of nematic liquid crystals by LPUV, and it thermal stability could reach about 130℃. 3 A cationic bolaform amphiphiles was synthesized that had two photosensitive double bonds, and can be polymerized by ultraviolet. A layer-by-layer self-assembled deposition film was prepared in aqueous solution by using this material and poly (sodium 4-styrenesulfonate). The UV-Vis. spectra proved that the multilayers film was uniform and layer-by-layer. When LPUV irradiated the film, the photopolymerizable double bond underwent [2+2] cycloaddition, and the production of the reaction distributed along the polarized direction of incident LPUV. Polarized UV-Vis. spectra indicated that the irradiated self-assembled multiplayer film was anisotropic, and the dichromic ration is about 0.09, it is higher than the spin-coating method of photosensitive polymer or monomer. We used this anisotropic film as alignment layer of nematic liquid crystals, and obtained a uniform and stability alignment result, the static contrast ratio is about 100, which is very close to application of liquid crystal device. This thesis is an instance that the photochemical material was used in the physics region of liquid crystals, the route that was from photosensitive monomer, self-assembled monolayer film to self-assembled multiplayer film was undergone, by this logical research method photoailgnment of liquid crystal was extended and consummated.

围绕上述思路开展了如下工作：1合成了三种可进行光二聚反应的光敏小分子单体，LPUV 辐照制作了光控取向膜；用紫外-可见光谱法和红外光谱法分析了薄膜中的光化学反应，发现小分子的光反应程度可达到50%以上，至少比光敏高分子高出5倍；薄膜的偏振红外光谱证实，经过LPUV 辐照后薄膜出现了明显的各向异性；将小分子光控取向膜制成液晶器件，在偏光显微镜下观察看到均匀一致的液晶取向；并且热稳定性达到100℃左右，接近实用化要求。2制备了含肉桂酸、香豆素基团的自组装单层膜；采用接触角的方法监测自组装反应的动力学过程；紫外-可见光谱证实了自组装单层膜在石英基板表面形成；自组装单层膜经LPUV 辐照后能诱导液晶均匀取向，而且热稳定性可达130℃，热稳定性进一步提高。3合成了含有光敏双键的双季铵盐，在水溶液状态下将它和聚乙烯基苯磺酸钠沉积生成layer-by-layer 自组装多层膜，紫外-可见光谱证实这是一个逐层均匀的沉积；在LPUV 照射下，自组装膜中的光敏双键按照偏振方向发生[2+2]环加成反应，形成取向膜，用二向色性值评价的分子取向度高于高分子及小分子光控取向膜的水平；实验证明用自组装多层膜制成的液晶器件亮暗态均匀，静态对比度约为100，达到实用化器件的水平。

Activities of phenylalanine ammonia - lyase, cinnamic acid 4 - hydroxylase and diterpene cyclase in rice plants are induced when their leaves are irradiated with UV light for 12 hours and 24 hours.

紫外光处理水稻化感材料后12 h和24 h，被诱导的苯丙氨酸氨基裂合酶、肉桂酸-4-羟化酶(CA4H)和二萜环化酶的酶活力比紫外光处理的无化感作用水稻中的要高2-4倍。

The Effect of different reaction conditions (solvent, reaction temperature, molar ratio of iodobenzene and acrylic acid, kind and amount of base, amount of catalyst, reaction time) on the yield was investigated. The suitable condition of the reaction was obtained.

考察了不同反应因素（溶剂、温度、原料比、缚酸剂及其用量、催化剂用量、反应时间）对反应的影响，确定了该催化剂对碘代苯与丙烯酸交叉偶联生成反式－肉桂酸的适宜反应条件。

ResultsThe optimum synthetic conditions were 2 g cinnamic acid,microwave power was 600 W,reaction temperature was 115℃,reaction time was 14 min,mass percent of macroporous resin was 30%,the molar ratio of cinnamic acid to isobutyl alcohol was 1:7, and the yield of the new process was 89.3%.

结果肉桂酸2 g，酸醇摩尔比1∶7，催化剂用量30%，微波功率600 W，微波温度115℃，微波时间14 min，转化率达89.3%。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新