丙酮基

Four non-ionic europium complexes,〓-phen(11),〓·bipy(12),〓·dia(13) and 〓(14)(TTA=2-thenoyltrifluoroacetone, DBM=dibenzoylmethane, phen=phenanthroline, bipy=2,2'-bipyridine, dia=4,5- diazafluoren-9-one, dmbp=4,4'-dimethyl-2,2,-bipyridine), were synthesised and the triboluminescent phenomena of 12, 13 and 14 were firstly observed. Structure determinations of 11,12 and 14 were carried out. The triboluminescence maxima of 12 and 13 are similar to those of their photoluminescence. X-Ray structure analyses show that Eu atoms all exhibit eight-coordinate tetragonal antiprismatic geometries and complexes 11, 12 and 14 are all centrosymmetric.

二、合成了四个非离子型的铕的配合物：〓、〓、和〓(14)[HTTA=2-噻吩三氟甲酰丙酮，DBM=二苯甲酰基甲烷，phen=邻菲罗啉， bipy=2，2'-联吡啶，dia=4，5-二氮杂芴-9-酮，dmbp=4，4'-二甲基-2，2'-联吡啶]，首次报道了12、13及14的摩擦发光性质，测定了11、12及14的晶体结构，并系统地讨论了晶体结构和摩擦发光活性之间的关系。12及13的摩擦发光光谱的极大值均类似与其相应的光致发光光谱，表明它们有相同的激发态。

In addition, there were also some special aromatic substances such as 1-nonanol, hexanoic acid 2-hexenyl ester, propanoic acid 2-hexenyl ester, butanioc acid 3-hexenyl estertrans-2-hexenyl valerate, theaspirane, gerenylacetone, methyl benzoate and ethyl benzoate.

此外还含有一些少量的1-壬醇、己酸－2-己烯酯、丙酸－反－2-己烯酯、丁酸－反－3-己烯酯、戊酸－反－2-己烯酯、茶螺烷、香叶基丙酮、苯甲酸甲酯、苯甲酸乙酯和乙酸辛酯等。

A run flat tire wheel assembly having a run flat support member formed by a ring-shaped metal shell and rubbery elastic members in an inside cavity of a tire/rim, wherein the rubbery elastic member comprises a rubber composition including 100 parts by weight of a diene-based rubber and 0.1 to 5 parts by weight of cobalt acetyl acetonate and/or, as a reinforcing filler, 40 to 90 parts by weight of carbon black/silica in a ratio of 10/1 to 1/2 and 1 to 20% by weight based upon the weight of the silica, of a silane coupling agent, whereby the bondability between the ring-shaped metal shell and rubbery elastic members is improved.

一种轮胎车轮组装体，它是在轮胎/轮辋的内空洞部具有由环状金属壳和橡胶状弹性体形成的漏气保用支撑体的漏气保用轮胎车轮组装体，其中通过由下述的橡胶组合物来构成上述橡胶状弹性体，改良环状金属壳与橡胶状弹性体的粘结性，所述橡胶组合物含有：100重量份的二烯烃类橡胶；以及0.1～5重量份的乙酰基丙酮酸钴、及/或作为增强性填充剂，40～90重量份的以10/1～1/2的比例配合的炭黑/硅石，和相对于上述的硅石重量，1～20重量％的硅烷偶联剂。

Preparation of the lateral chain-4-benzyloxy-3-hydroxy butyronitrile is introduced as the substrate, the REFORMATSKY reaction is performed, then obtains the dicarbonyl ester, in the structure of which containing a chiral hydroxyl group, then performs the chiral reduction, take off the benzyl group after the protection reaction with acetonylidene,then obtains the lateral chain by oxidation.

手性侧链醛的合成：采用-4-苄氧基-3-羟基丁腈作为底物，通过REFORMATSKY反应缩合得到含有手性羟基的二羰物酯，再手性还原，丙酮叉保护后氢解脱苄，最后氧化得到侧链醛。

In the second part of the thesis, we discussed a L-proline-catalyzed direct Aldol reaction between L-amino acid-derived N,N-dibenzyl -amino aldehydes 15 and acetone, cyclopentanone or hydroxyacetone, which afforded (-amino--hydroxy- or (-amino-,(-dihydroxy-ketones in good to excellent yields (up to 94%) and diastereoseletivities (up to 94.9%).

发现许多情况下，反应的产率和de值超过90%。接着，在碱性条件下，我们将L-亮氨酸衍生的N，N-二苄基--氨基醛15g与羟基丙酮反应得到的主要产物(，-二羟基-γ-氨基酮171d与次溴酸钠反应，得到了具有抗肿瘤活性的天然产物PM-94128的氨基酸片断184。

Alanine, glycine and glutamine, and present weak resonances of creatinine also; diabetes mellitus patients show hyperglycorrhachia and strong resonances for ketone bodies and glycine; patients with benign prostatic hypertrophy or urethral stone have high levels of creatinine; the genital tumor females can be distinguished with low pyruvate levels on the bases of /sup 1/H-NMR spectra.

以下乃是由上述样品族群之氢光谱所得之结论；孕妇的脑脊髓液具有低浓度的脊髓糖；胺基酸(如丙氨酸；麸氨酸和甘氨酸)和肌酸酐；有酮体生成，糖尿病患的脊髓液在氢核光谱显示高浓度的脊髓糖，另外有丙酮酸；乙醯乙酸盐和甘氨酸的强烈共振讯号，而具摄护腺肥大症或是尿道结石的病患，具有高浓度的肌酸酐在其CSF的氢光谱中。

In order to investigate the effects of magnetic field on the liquid-liquid extraction,the extraction process of acetone-water-methyl isobutyl ketone system was studied under magnetic field with different magnetic induction intensities.

为探讨磁场对液-液萃取过程的影响，本研究在不同磁感应强度的磁场中，对丙酮-水-甲基异丁基酮物系的萃取过程进行了研究。

In 1903, D. Vorlander and co-workers found that treatment of dibenzylideneacetone with concentrated sulfuric acid and acetic anhydride followed by hydrolysis by sodium hydroxide yielded a cyclic ketol, the structure of which was unknown at the time.

1903年，D。 Vorlander和合作者发现，二苄基丙酮与浓硫酸及醋酸酐经过氢氧化钠水解后产生了当时还不知结构的环状酮醇。

The unit can be used to sample most containerized liquid wastes, except those containing ketones, nitrobenzene, dimethylformamide, mesityl oxide, and tetrahydrofuran.

该装置可用于大部分的废品样本采集除含有酮，硝基苯，二甲基甲酰胺，异丙叉丙酮和四氢呋喃的液体废品。

The ozonolysis of isoprene has a significant contribution to atmospheric carbonyls, especially to formaldehyde and methylglyoxal.

异戊二烯臭氧氧化反应对大气羰基化合物特别是甲醛和丙酮醛具有重要贡献。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。