氧化合物

One compound is identified as the title compound 2-benzyloxy-5-fluoro-4-oxo-pyrimidine-3-butyric acid ethyl ester, and the other one is its formula isomer.

通过IR谱确证一个化合物是目标物2-苄氧基－5-氟－4-嘧啶酮－3-丁酸乙酯，另一化合物是它的同分异构体。

Part II: The structural modification of norcantharidin and the discovery and applications of NCS-DMSO combinatorial system: A series of derivatives of 5,6-dehydronorcantharidin was transferred into their corresponding 5,6-epoxynorcantharidin derivatives with Oxone, and finally 14 new compounds have been synthesized; and we also discover the novel combinatorial system NCS-DMSO to make N-aromatic substituted norcantharidin amic acids to their corresponding imides in high yields.

利用十分廉价的Oxone为氧化剂，成功的得到了14个5，6-环氧去甲斑蝥素系列衍生物；同时我们意外地发现了NCS-DMSO组合体系可以使去氢去甲斑蝥素酰胺类化合物实现分子内脱水而生成亚胺类化合物，首次发现和运用该全新的组合体系实现了该类反应。

The results show that DCRP is indeed a excellent flame retardant. The material can reach the UL-94-V-0 level through choice different synergist. Many alternative synergists to antimony oxide are available for use. Zine and iron compounds are often used in place of the standard antimony oxide because of their lower cost and special properties. Additionally, synergist mixtures are also useful in obtaining specific properties.

本文在参考国内外文献的基础上自行设计了一些配方，分别把得克隆应用于尼龙66、尼龙6、PBT、PP、ABS等材料中，对得克隆进行了应用研究实验，发现得克隆可赋予材料优异的阻燃性，通过选用不同的协效剂一般可以达到UL-94-V-0阻燃级别，并且，可供选择的协效剂不仅是三氧化二锑，还有多种其他化合物如氧化铁、硼酸锌等及它们的配合物，这类协效剂在某些方面还优于三氧化二锑。

The results show that DCRP is indeed a excellent flame retardant. The material can reach the UL-94-V-0 level through choice different synergist. Many alternative synergists to antimony oxide are available for use. Zine and iron compounds are often used in place of the standard antimony oxide because of their lower cost and special properties. Additionally, synergist mixtures are also useful in obtaining specific properties.

本文在参考国内外文献的基础上自行设计了一些配方，分别把得克隆应用于尼龙66、尼龙6、PBT、PP、ABS等材料中，对得克隆进行了应用研究实验，发现得克隆可赋予材料优异的阻燃性，通过选用不同的协效剂，一般可以达到UL-94-V-O阻燃级别，并且，可供选择的协效剂不仅有三氧化二锑，而且还有多种其他化合物如氧化铁、硼酸锌等及它们的配合物，这类协效剂在某些方面还优于三氧化二锑。

Tris-(1-aziridinyl)- phosphine oxide and 2-[bis-(2-chloroethyl)-amino]-tetrahydro-1, 3, 2-oxazaphospholidine-2-oxide(Ⅲ, B-518) possess inhibitory action against a variety of animal tumours and have been used clinically. Recently, bis-(1-aziridinyl)-phosphinyl carbamic acid ethyl ester(Ⅱ, AB-100) was found to possess significant activity with low toxicity on experimental animal tumours.

双(2-氯乙基)氨基磷酰二氯与乙烯亚胺在脱水苯或对氧六环中并在三乙胺的存在下进行缩合，生成N，N-双(2-氯乙基)-N′，N-二乙烯基-磷酰胺；与双巯基或双氨基化合物作用，则生成相应的环状磷酰胺、磷酰胺酯以及磷酰胺硫代酯氮芥类化合物。

Their extraction properties have been studied by metal picrates liquid-liquid extraction and the results show:By using three thio-heterocyclic compounds, twelve novel derivatives of thioalkoxycalix[4]arenes on the lower rim have been synthesized and structurally characterized by 1H NMR、13C NMR、IR and MS.

本文采用三种巯基杂环化合物对杯芳烃下沿进行修饰，得到了下沿含有杂环硫烷氧基的杯芳烃系类系列衍生物，并利用~1H NMR、~(13)C NMR、IR和MS对所合成的十二个未见文献报道的新化合物进行了结构表征。

The release of the carbon in these compounds for recycling depends almost entirely on the action of both aerobic and anaerobic bacteria and certain types of fungi.

这种化合物通过碳的释放来实现循环，主要依靠喜氧和厌氧细菌以及一些菌类的活动。

Advances in Research on Plants Reactions under Phosphate Starvation;2. Topics discussed in this article includes synthesis and structures of R2M24, the reactions of its metal-metal triple bond with various reagents such as nucleophiles, carbon-carbon mu.

本文对一类重要的ⅥB族金属叁键化合物R_2M_2_4(R为环戊二烯基及类环戊二烯基)近年来的研究成果进行了综述，综述重点是这类化合物的官能团M≡M参键的化学活性，全文包括R_2M_2_4的合成及结构，M≡M叁键与亲核试剂、与碳-碳重键，与氧或与金属羰基物等试剂的反应及其应用。

Topics discussed in this article includes synthesis and structures of R2M24, the reactions of its metal-metal triple bond with various reagents such as nucleophiles, carbon-carbon mu.

本文对一类重要的ⅥB族金属叁键化合物R_2M_2_4(R为环戊二烯基及类环戊二烯基)近年来的研究成果进行了综述，综述重点是这类化合物的官能团M≡M参键的化学活性，全文包括R_2M_2_4的合成及结构，M≡M叁键与亲核试剂、与碳-碳重键，与氧或与金属羰基物等试剂的反应及其应用。

Mainly composed of hydrocarbons, but also a small amount of oxygen, sulfur or nitrogen compounds.

主要由碳氢化合物组成，也有少量含氧、硫或氮的化合物。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！