吡啶

Structures of glycosyl ester of 13-cis-4-restinoic acid(5) and 6 were characterized by 1H NMR,13C NMR,IR and MS and confirmed to be β-configuration.

13-顺维甲酸与溴代-2，3，4，6-四-O-乙酰基-α-D-吡喃葡萄糖在4-二甲氨基吡啶催化下合成了13-顺维甲酸葡萄糖酯(5)，以二氧化锰为氧化剂，5经氧化成功地合成了新化合物13-顺-4-羰基维甲酸葡萄糖酯(6)。

These derivatives are readily obtained by alkylation of 2-mercaptopyridine and alkyl halides under alkaline conditions.

这些衍生物可以容易地在碱性条件下通过2-巯基吡啶和卤代烷的烷基化而得到。

This article introduces the development of antibiotic and disinfectant hand cleaner with skin-cared effect, on the precondition of its disinfectant effect, by treating with contents of trace of copper sulfate, dramatically enhancing the effectiveness of disinfection in cationic surfactants with cetylpyridinium chloride, and avoiding treating with other special sterilizations for disinfection.

在保证杀菌效果的前提下，通过添加微量硫酸铜的办法，对阳离子表面活性剂十六烷基吡啶氯化铵的杀菌能力进行大幅增效，使得消毒杀菌洗手液中不再添加其他专用消毒剂。并通过选择温和表面活性剂复配、限制表面活性剂总量等办法，最大程度地减少消毒杀茵洗手液对皮肤的损害。再辅添芦荟浸膏等护肤成分对皮肤进行修复和保湿。由此研制出具有良好杀菌、护肤和去污效果的护肤型消毒杀菌洗手液

Cd can sensitively catalyze the discoloration reaction of indigo carmine and potassium bromate in HCl medium and in the presence of α,α′-bipy as activator.

基于在盐酸介质中，以α，α′-联吡啶为活化剂，镉对溴酸钾氧化靛蓝胭脂红褪色反应有灵敏的催化作用，建立了测定镉的动力学新方法。

Meanwhile,the behavior of the complexation between the sulfonated SEBS ionomers and pyriding-containing random coploymers both in dilute solution and in bulk was evidenced by an abnormal increase of the viscosity and Tg .

SEBS磺酸盐离聚物与含吡啶基的无规共聚物在稀溶液和本体中能形成分子间的络合物，这从共混物溶液粘度的反常增大和本体Tg的显著增加得到了证明。

As far as these organic matters are concerned, there are as much sixteen kinds of low molecular weight organic acids and Aldehyde, Alcohol, Ketone, Carboxylic acid, Carboxylic acid, Furan, Pyrazine, Fat hydrocarbon, sulphide and so on. The results have also shown that the content of Aldehyde, Alcohol, Fat hydrocarbon, Carboxylic acid, Furan, Pyrazine, sulphide in composted production amended with NMF inoculants increased 6.5%、9.2%、5.7%、15.6%、9.8%、11.3% and 28.6%, respectively.

研究证实添加微生物腐熟菌剂的奶牛粪堆肥产品中醛类、醇类、酯类、羧酸类、呋喃类、吡啶类和含硫类等低分子有机化合物的相对含量比未添加NMF微生物腐熟菌剂分别增加6.5%、9.2%、5.7%、15.6%、9.8%、11.3%和28.6%，而酮类、脂肪族碳氢化合物的相对含量则分别减少11.4%和15.5%。

This provides a convenient method for the selective oxidation of alcohols to aldehydes and ketones.

带给电子取代基和吡啶取代基的底物能顺利被氧化。

Pydirine-IR show that the amount of L acid sites is more than of B acid on the surface of zeolite β.

4吸附吡啶的红外光谱表明，水蒸气改性后的β分子筛表面L酸量大于B酸量。

(NH_4)_2GeF_6·H_2O is obtained as light-green single crystal from the low-temperature solvothermal reaction of GeO_2, NH_4VO_3 and HF in pyridine-water and characterized by the IR, elemental analysis, TG-DTA and single crystal X-ray diffraction.

化合物(NH_4)_2GeF_6·H_2O由GeO_2，NH_4VO_3和HF在吡啶-水体系中低温溶剂热条件下合成，并用IR、元素分析、TG-DTA和X射线单晶衍射进行了表征。

This thesis included three parts:(1)The study of the complexation and threaded structures based on the benzo-21-crown-7/secondary dialkylammonium salt recognition motif;(2)Secondary dialkylammonium salt can thread through the cavity of pyrido-21-crown-7 to form the threaded structures;(3)The study of the size of macrocycle rings which can complex with secondary dialkylammonium salts.

本论文主要开展了以下三方面內容的研究：(1)基于苯并21-冠-7(B21C7)的主体冠醚和二级铵盐客体化合物的络合以及互穿结构研究；(2)客体二级铵盐穿过吡啶-21-冠-7(P21C7)的空腔形成准轮烷及轮烷互穿结构的研究；(3)对关于络合二级铵盐的冠醚环的尺寸大小做了探讨。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。